Their Rehabilitation Training days are drawing to a close end.
Right now, BoBoiBoy, Zenitsu and Inosuke stood back to see Tanjiro have at it with Kanao in their reflex training exercise. They couldn't see where their hands are with the speed they inputted themselves. The ones that can keep up with their pace are BoBoiBoy and Yaya, as both mastered their Total Concentration, Constant.
It's also an opportunity for BoBoiBoy to show off his hat to everyone present. The results he had gotten were fairly good.
Tanjiro was in awe by the hat's appearance and he told BoBoiBoy that it fits his personality.
Zenitsu kept commenting that he had never seen a type of hat that is like foreign to him. Still, he said it looked good on him, saying it looked really unique to be on his head. BoBoiBoy didn't know if he takes that as a compliment or not.
Inosuke, as expected, sees his hat as a contender to rival his own mask. BoBoiBoy knew Inosuke had to make things a competition to him, even to the little things like his hat and the mask. In the end, Inosuke was declared the winner for how much he boasted about his own, yet BoBoiBoy didn't even try to because he didn't want to.
Aoi complimented about his hat, despite her hard exterior-ed face she's putting on. She even said he looked cute while wearing it. BoBoiBoy had shivers up his spine when he sensed a glaring dagger towards Aoi.
The young nurses were pretty amazed by the hat's introduction on BoBoiBoy's head. They each took turns on wanting to try it out on their heads. He didn't mind as long as it made them happy and him as well.
Shinobu had already seen the hat before from Yaya. Once she had seen BoBoiBoy wearing it right now, she commented that his hat made him look like a child. Not in a mocking way she said it, but in an endearing way to not hurt his feelings.
Aside from all of those above, they watched the onslaught happening.
"Holy—" Zenitsu gulped. If that's how he is going to be trained, he'll need to triple the effort in doing so.
"Look at them go!" Inosuke, himself, was feeling nervous by how much faster they can move with their hands.
"I gotta admit, I think Tanjiro might be faster than me." BoBoiBoy said while spectating.
"That's not true, BoBoiBoy. You and Tanjiro both matched up with your current states. He is just increasing his speed by using the Breathing Technique." Yaya explained.
Tanjiro gritted his teeth as he struggled to get any of the cups. Each time he grabs one, Kanao anticipated it and blocks his hand from grabbing it easily. The match was decided when Kanao had gotten the cup before Tanjiro can. As he was about to splashed, the time limit exceeded.
"That's it!" Aoi stopped them. Tanjiro let out a tired sigh and sat back down with sweat pouring down his face.
"You sure are fast, Kanao!" Tanjiro breathed out his words.
Kanao only stared at him as a response.
"Your record is now ten wins and ten losses." Aoi gave him the record.
"I'm totally not done yet." Tanjiro said as he swings his arm to respond his sore muscles.
"Let's go for a run. Are you up to it?" He asked to the rest of the boys.
"You mean while doing Total Concentration, Constant?" Zenitsu asked, not feeling energized.
"Yeah."
BoBoiBoy made his way towards his way towards them. "Let's do this!"
Tanjiro prepared his hand and palm-thrusted BoBoiBoy's middle torso. He neither flinched nor felt the pain.
"Didn't feel a thing." The other boy smirked. Tanjiro then went to Zenitsu next and did the same procedure he did to BoBoiBoy.
"Keep this up the whole time?" Zenitsu shook from the thrust.
"MONJIRO!" Inosuke revealed his abs to them, making Zenitsu notice it.
"Take this!" He later punched his stomach.
"That's nothin'!" Inosuke showed off his endurance prowess.
"You're all brawn and no brains!" The blonde narrowed his eyes towards the boar.
"Let's go!" Tanjiro said.
"Hehehe! That's awesome!" BoBoiBoy said his signature catchphrase and with a thumbs-up.
A Few Months Earlier
Prior to the events happening with BoBoiBoy and the rest of the Demon Slayers, somewhere lies an Infinite Castle, a very complicated structure with rooms that have entrances and exits to be literally distorted in every direction.
Nakime, a female demon who can play the Biwa, controls and manipulates this castle under her bidding with the use of her Biwa. With only a single pluck of her Biwa's string, she summoned demons into any position she so desire.
'Where the hell is this place?' The newest Lower Rank Six Demon, Kamanue, thought in confusion as he looked around.
A Lower Rank One, Enmu, is seen walking around the castle's walkway with a Lower Rank Two, Rokuro.
'Was it that woman's Blood Demon Art?' Kamanue gazed at the female demon with her Biwa. 'Looks like the whole space is distorted around that woman.'
The mentioned demon plucked her Biwa's strings twice. The space around had been manipulated and the environment changed. A few more demons had spawned near the Lower Rank Six's spot.
A Lower Rank Three, Wakuraba, and a Lower Rank Four, Mukago, were summoned.
'Only the Lower Ranks of the Twelve Kizuki have been summoned. That's never happened before.' Kamanue said in his head.
'Lower Five isn't here yet.'
Nakime struck her Biwa, bringing them all in on one spot.
'It just moved! Blood Demon Art again?' Everyone around were looking at each other with no clue of what's going on. Kamanue then spotted a woman above them wearing a black kimono staring down at them.
'What's the deal with that woman?' Kamanue stared at her red eyes with slits. 'Who is she?'
The moment the woman opened her mouth, her voice isn't feminine.
"Lower your heads and crouch down."
Kamanue realized this woman isn't exactly a woman at all. No, her voice is deep and masculine.
"Prostrate yourselves."
The environment suddenly shifted as the platform the woman was standing had been lowered and now in front of them. Every Lower Moon did as they were told and crouched down with their hands lowered in front of them.
'It's Master Muzan!' Kamanue sweats profusely. 'That's Master Muzan's voice! I didn't recognize him! He's changed his appearance and aura. The precision of his shape-shifting is mind-blowing!'
"P-Please forgive us!" Mukago said on behalf of the five Lower Ranks. "Since you've assumed a different form and aura..."
"Who gave you permission to speak?" Muzan's threat silenced her. "Don't presume to voice your worthless thoughts. Answer my questions. Nothing else."
Muzan spoke. "Rui was killed. I'm talking about Lower Five. I have but one question to ask of you. Why is it that you demons in the Lower Ranks are so utterly weak?
"You shouldn't be satisfied with just being counted among the Twelve Kizuki. This is merely your starting point. To devour more humans, to gain more power... Your starting point for becoming useful to me..."
"For over a century, the members of the Upper Rank Twelve Kizuki remain unchanged. It's always been the demons in the Upper Ranks who've disposed of those Hashira demon hunters. But what about you demons in the Lower Ranks? How many times have you been replaced?"
'That's easy for you to say, but we...'
He didn't realized that he had dug his own grave.
"That's easy for you to say, but we..." Muzan had read Kamanue's mind. "What? Go ahead and say it."
'He can read my mind?!' He dreaded at the thought. 'I'm screwed!'
"Screwed how? Go ahead and say it." Veins appeared around Muzan's neck up to his head. Then, his demon mass with multiple mouths around its sides erupted out of his kimono's sleeve and grabbed the Lower Rank Six on its grasp.
"Please forgive me, Master Kibutsuji!" Kamanue cried. "Please! Please show me mercy! I'm truly sorry! I'm truly sorry! I'm truly—"
*Splat*
Just like that, a tendril is heading towards the Lower Rank Six with its gaping mouth hole. Blood oozed out and covered the rest of the Lower Ranks in blood. The mouth burped from feasting on the demon.
'Why is this happening?' Wakuraba, the Lower Rank Three, thought with sweat occuring. 'Am I going to be killed? After all I went through to become a Twelve Kizuki... Why? Why? I thought I was going to do more and more!'
"Are you more afraid of the demon hunters than you are of me?" Muzan spoke.
"No!" Mukago, the Lower Rank 4, yelled.
"Every time you run into a demon hunter Hashira, the only thing on your mind is escape."
"Oh no, that's not what I'm thinking!" She started to cry out. "I'll put my own life on the line to fight for you!"
"Are you refuting what I just said?" Muzan threatened.
Mukago's fate was sealed as Muzan's tendril-like mass devoured her quickly. The blob had already consumed her whole.
'No good! It's over! Our minds are being read. Whether we agree or disagree with him, he's still going to kill us!' Wakuraba glanced at the red flesh. He even analyzed Muzan and the flesh altogether.
'We can't possibly beat him in battle, either! In that case...'
He prepared his legs and his feet then spring upwards in a swift motion.
'...the only option is to run!' He run around in different directions, hoping to look for an exit from this castle.
'What a fool.' Enmu, the Lower Rank One, thought as he looked up to where Wakuraba is going.
'Just make it out of here somehow! Somehow! Now that I've gotten this far away...' He was nearing the exit...
...until his head was all that's left from his body. Muzan held his head in one hand.
"I believe that the Twelve Kizuki are better off consisting of just the Upper Ranks. I am now dismantling the Lower Ranks."
'He got me?! No way! Was it that Biwa Player's technique? But no, I didn't hear any biwa sounds.' It's his only thought before his vision blackened. 'Why? I can't regenerate my body.'
Muzan then begins to remove all the blood from his head before throwing the Wakuraba's head in front of the two remaining Lower Ranks.
"Do you have any last words?" Muzan asked.
Rokuro, the Lower Rank Two, spoke up nervously. "I can still be of use to you! If you could give me just a short reprieve, I swear I'll be of use to you!"
"How long a reprieve are you asking for, specifically? How do you intend to be useful? What exactly can you accomplish with your current skills?"
"Your blood!" He yelled in a desperate attempt to save himself. "If you could give me a share of your blood, I will acclimate without fail! I will fight for you as an even more powerful demon!"
"What makes you think you can order me to give you my blood? You're beyond shameless. Remember who you are."
Rokuro spreads heaving gasps. "You misunderstood me! You misunderstood me! I just..."
"Shut up. I misunderstood nothing. I'm never mistaken about anything. I'm the one who calls the shots. My word is absolute. You have no right to reject what I say. Whatever I say is right is the right thing. You tried to tell me what to do. You deserve to die."
Another death happened inside of the Infinite Castle. Blood begins to pool all around the last remaining Lower Rank.
"Do you have any last words?" Muzan asked to the Lower Rank One.
'He'll end up killed, too.' Wakuraba's head thought despite having all of his blood removed. 'Everything hinges on the Master's mood. I'll be dead soon myself.'
"Well, let's see..." Enmu clasps his hands together. "This is like a dream for me. To die by your hand in person. And I so enjoyed hearing the other demons' last gasps! I feel so blessed! Because I love to see others in despair and agony. Because it's like a dream come true for me! I thank you for leaving me for last!"
Those were his last words before he would die. Muzan reconsiders them and sees something in Enmu. He proved that his current mentality is suited for the likes of him.
Proving himself valid, Muzan sent a thick tendril-like mass from above and injected Enmu in the neck with his blood. The Lower Rank One gasped and twitched uncontrollably and violently.
"That's what I like to hear. I'm going to give you an ample share of my blood. Although you might not be able to withstand the volume of blood, and die. Still, if you do manage to acclimate, you're sure to acquire even greater strength. Make yourself useful to me, then. Kill the demon hunter Hashira!"
Muzan points at his own ears as an emphasis. "If you can kill the demon hunter wearing hanafuda-like earrings as well as the demon hunter with a white streak on his hair, I'll give you even more of my blood."
Enmu coughed up saliva and blood. After briefing him with his task, Nakime struck her Biwa many times, sending Muzan to someplace where there is an entrance/exit. Doors behind him closed altogether with Enmu as the last one to exit with a door mysteriously spawned beneath him and fell.
He landed on the deserted part of an unknown town as the sliding door above him disappear slowly. Enmu writhed himself in the pain of the blood Muzan gave to him.
'What's this? I see something! It's gushing into me along with Master Muzan's blood!'
A flashing image of Tanjiro appeared in his head along with BoBoiBoy in the last image.
"If I kill the Hashira and these kids, I can get more blood!" Enmu chuckled maniacally despite the pain.
"It's like a dream!"
Inside of the Butterfly Mansion housed the four young professional Demon Slayers and an idled Kamado Demon. It is currently 4:00 AM.
Since they have fully recovered, the rest of the Slayers were given a room to sleep in instead of the wards. They were roomed in together specifically as they don't want to take up most of the mansion's remaining guest rooms individually.
Tanjiro slept peacefully in his sleep. Zenitsu snores lightly while Inosuke is the complete opposite. BoBoiBoy slept in between Tanjiro and Zenitsu. He was moving himself in his sleep as the dreams he had gotten were slowly getting to him.
"CAWW! It's morning! Wake up!" The Kasugai Crow alarmed them. Some of them woke a bit groggily.
"Ahhh! What happened?!" BoBoiBoy sat up from his slumber in panic.
"What the heck?" Inosuke mumbled.
"What's going on?" Zenitsu muttered.
"The casualties of the Infinite Train are increasing. More than 40 are now missing. You are to join Kyojuro Rengoku on site. Head west at once!" The crow briefed them of their new mission.
"Kyojuro Rengoku..." BoBoiBoy hummed. "Hey Tanjiro, looks like we'll get to see him sooner than I thought."
The other boy nodded. "Yeah. But for now, let's prepare for our mission. Zenitsu, Inosuke, c'mon!"
"Oh come on... Five more minutes please..." Zenitsu muttered and tried to go back to sleep while the rest are getting themselves ready.
"I have decided to send Tanjiro and the others on the Infinite Train mission." Oyakata told the Insect Hashira. "Shinobu, may I ask what made you recommend Tanjiro and the other boy?"
"Tanjiro has a pure soul and is capable of striving hard on a daily basis, as for BoBoiBoy, he displays such hidden potential that neither all of us Hashiras are incapable of bringing it out. He worked harder than Tanjiro and that's all the more reason to send him along with Tanjiro and his other friends."
"I have a strong feeling in my gut telling me that their mission will bound to turn out greater than I anticipated. With BoBoiBoy as their teammate, they will achieve positive results."
Oyakata hummed at her gut feelings. "You must really believe in BoBoiBoy a whole lot if you are willing to send him out with the rest."
"Yes. And the upside that he and Tanjiro showed exceeded my expectations. And above all else, Tanjiro has a clear goal in mind. To defeat Kibutsuji."
"As far as that goes, I'm in agreement with you."
"Also, Tanjiro himself told me that his father had used the Fire Breathing technique. And shockingly, BoBoiBoy himself is able to use the Fire Breathing technique as well." Shinobu explained to the Master.
"Ah..." Oyakata hummed once more. It's not every day he gets to hear Demon Slayers utilizing the Fire/Flame Breathing technique.
"At this time, there's no denying that they still have a way to go, but perhaps Rengoku, the Flame Pillar, might be able to provide some guidance."
"Yes. Considering Tanjiro's sister, who won't devour humans after becoming a demon, as well as their encounter with Kibutsuji, it might very well be their destiny." Oyakata shares his opinion.
Meanwhile, both the dark redhead and white-streak haired boy are on their way to get their uniforms and their swords ready.
"All right, time to go!" Tanjiro held a confident face.
"Are you gonna get something? My sword is back at my room." BoBoiBoy asked.
"Nope. I'll be informing Aoi and Kanao that we're going to our next mission." Tanjiro answered.
Before he can respond, BoBoiBoy heard footsteps from around the corner they were about to go.
"Hm? Someone's coming." He told Tanjiro. Once the figure turned the other corner, they can see who it was. It's a boy their age.
They bumped each other's shoulders, even when they got out of the way.
'Hold on, that guy... Wasn't that the guy from Final Selection?' BoBoiBoy thought as he gave a good look to the boy.
It was a young man that have a feral appearance. He is six feet taller, taller than Tanjiro and BoBoiBoy put together. His black hair is longer and like that of a mohawk-style. He has large, inward-slanting eyes. He has a long scar spread from his face. His outfit changed to a dark olive-green version of the Demon Slayer uniform, over which he still sported his old purple yukata.
'Last time I looked, he was noticeably short. But now he's taller than us and have an amazing build in such a short time.'
"Long time no see! Glad to see you're doing well!" Tanjiro shouted his greeting towards the Demon Slayer. Expectedly, he kept quiet and walked away, much to Tanjiro's way of greeting.
"Maybe he's still mad at you because you almost broke his arm." BoBoiBoy whispered.
"Really? But his scent tells me that..."
BoBoiBoy cuts him off. "You know what, let's just go. We still need to tell the others that we're going."
They found Aoi hanging some blankets on the clothesline outside of the mansion. They approached her to tell them of their mission and that they are going.
"Is that right? You're heading out now?" She asked. "It was only for a short time, but I'm glad we got to spend that time together."
Aoi stole a glance to BoBoiBoy who stared at her blue eyes. Her face brightened up with a pink tint covering her cheeks as she looked at him who had saved her back then. She tends back to her duty of hanging the blankets.
"G-Good luck to you both! Take c-care!" She had to slap herself mentally for stuttering like that.
"Thank you so much for looking out for us when we were so busy! Thanks to you, we can go back into battle!" Tanjiro praised her.
"You're clearly a lifesaver, Aoi! We'll treat you back the same way you treated us someday!" BoBoiBoy also gave his gratitude to the girl.
Aoi had stopped her doing and looked at the ground. "There's no need to thank me. After all, I survived Final Selection only by luck. And then, I was too afraid to go into battle. I'm a coward."
She pulled the blanket into her arms, but didn't do anything to it. She just stare downwards at the ground in shame.
"Hey, that doesn't matter." Tanjiro's voice reached her. "Since you helped us out, Miss Aoi, you're part of us now. And I'm carrying all of your emotions onto the battlefield with me!"
Wind breezed by her face. Aoi slowly looks back at the two boys. A look of wonder plastered.
"All right! Look after us if we get hurt again, okay?" Tanjiro then runs off somewhere from the part of the Butterfly Mansion.
"Aoi, listen." The mentioned girl shifts her eyes to the other boy. "Like he said, it doesn't matter what happened at Final Selection. Since you're here with us now, we'll look out for you and the others."
Her eyes wavered. "BoBoiBoy, I—"
"I also wanna thank you for being with Yaya for the past few years. You had no idea how happy she was when you were with her."
Her eyes widen. She had no idea how much of an influence she can become to Yaya. She treated her as if she is her own sister.
In reality, Aoi always wanted a sister in her own life. Ever since her parents were killed by demons, she had no one but herself to rely on. She spent the rest of her life in encompassing sadness, and wallowing in her own depression.
That is, until Shinobu and Kanae had took her in and treated her right.
"I gotta go now! Take care of yourself, Aoi! We'll be back before you know it!" BoBoiBoy is about to go look for Tanjiro.
"Wait!" Aoi stopped him from going yet. "T-Thank you... for everything."
BoBoiBoy looked back once more to meet tears forming on her eyes and a smile on her lips. He responded back with a smile of his own before making his way towards the back of the Butterfly Mansion.
Not long when he got there, he had already heard Tanjiro striking a conversation with a certain someone. BoBoiBoy realized he was not seen yet and hid beside the wall while peeking his head to listen at their chat.
"What was that you just flipped?"
"Farewell."
"Money? It says Heads and Tails, huh? Why did you flip it?"
"Farewell."
"You really made it twirl around!"
Meanwhile, BoBoiBoy silently laughed at Tanjiro's cluelessness. 'I forgot that he doesn't know about Kanao's way of talking with someone.'
"If I flip this to decide what I haven't been ordered to do, I just decided whether or not to speak to you. Don't Speak was heads, and Speak was tails. Because it came up tails, I spoke to you." Kanao finished her explanation and turns to Tanjiro. "Farewell."
"Why don't you decide for yourself?" Tanjiro asked straightforwardly. "What did you want to do, Kanao?"
BoBoiBoy then leans on the wall and crossed his arms while trying not to be seen.
"It doesn't matter. Nothing matters to me, so I can't decide for myself." Kanao said with a smile.
"I don't think there's anything in this world that doesn't matter." Tanjiro said as an opinion. "I guess..."
Tanjiro crosses his arms. "...the voice in your heart is really tiny. Hmm... Sure, following orders is important, but..."
'What are you gonna do, Tanjiro?' The hidden boy thought.
Tanjiro then beats his palm with his hand as he thought of an idea. "Hey, can I borrow that for a second?"
Kanao was startled by the question, but gives it to him anyway.
"Thanks!"
Soon, Tanjiro stood up and ran to the center of the yard with the coin in his hand.
"Okay! Let's toss this to decide!"
"Decide what?"
'Exactly. Decide what, Tanjiro?' BoBoiBoy asked in his head.
"Whether or not..." He spun the coin in the air before catching it. "...you're going to listen hard to the voice in your own heart from now on!"
With the coin placed on the top of his hand, he flicked it with his thumb and the coin was tossed in the air quite too much.
"Aaahhh! I flipped it too high!" Tanjiro panicked but composed. "Heads! Let's make it heads! If it comes up heads, Kanao, you're going to follow your heart!"
Before the coin would land, a gust of wind blew by their direction and Tanjiro had lost sight of the coin.
'What in the world?' BoBoiBoy felt the wind that passed by. 'Talk about inconvenient timing.'
"Aahh! Huh? Where did it go?!" Tanjiro grew worried he might've lost it. "Aaaahh... Aaaahhh! Oh, is that it?!"
Luckily, he spotted the coin about to land and caught with the top part of his hand with his other covering it.
"Got it! Got it! Kanao!" Tanjiro then made his way to Kanao, still sitting down.
"Ready, Kanao?" He slowly opens his hand.
'Heads, isn't it? Or at least, that's what I'm hoping to think it is.' BoBoiBoy leaned closer go get a good view of the coin.
When Tanjiro opened up the hand completely, it came up as Heads.
"It's heads!" Tanjiro cheered and bounced on the air. "Kanao!"
Kanao tried to get back her coin when she felt a pair of hands covering her own.
"Good luck!"
"Ah?!"
'Hehehe! Smooth move, Tanjiro!' BoBoiBoy smirked at him.
"It's the heart that drives people. So, your heart can grow as strong as you want it to!"
Kanao is a little bewildered of what's happening all at once. A while ago, she was enjoying her scenery, then Tanjiro swooped in and gave her a change.
"All right! See you again someday!" Tanjiro runs off to the direction where BoBoiBoy is hiding. The latter wanted to walk away from making himself noticed but he wanted to see his reaction first upon finding him.
"H-How did you make it come up heads?!" Kanao stood up and yelled at Tanjiro.
Tanjiro swiftly turned around.
"Just by chance. And if it was tails, I was going to keep tossing it over and over until it came up heads!" He ended with a pure grin on his face.
That action alone reignited something inside of Kanao. Her eyes shone at his smile.
"Take ca—AAHH! BOBOIBOY?!" He almost fell down from discovering him hiding.
"Yo!" He flashed him a thumbs-up while grinning ear-to-ear.
"How long have you been there?!"
"Long enough to know you've been helping her with her issue. That was quite helpful of you." BoBoiBoy said truthfully.
Tanjiro frowned from the fact that he eavesdropped on them but chose not to pursue that or argue about. He then left to get himself ready, knowing of reminding the others they're leaving is done.
BoBoiBoy looked back once more at Kanao. She gazed at her coin for a while before enclosing it with both of her hands and putting it closely to her chest. His reminder echoed in her head.
He knew it would be good to let Tanjiro take care of Kanao's current problem about herself thanks to Yaya telling him about it the other day. Speaking of which, he wasn't done there.
There is still someone he needs to see before preparing.
A certain pink Demon Slayer was just done tending to her last batch of patients. She exited the wards and was on her way to her room to relax. On her way there, she heard hurried footsteps from one corner she was about to turn to and—
*Thud*
"Ow...!" She heard someone very familiar who responded the slight ache. She already knew who it was by the tone of the voice.
"BoBoiBoy? Is that you?" She picked herself up before going to the boy, still on the floor.
"Y-Yaya. Sorry about that." He accepted her hand and she pulled him up to his feet.
"Where are you going? Are you in a hurry for something?" She asked.
"I was looking for you, actually." He scratched the back of his head. "We are gonna go on our next mission right now. I just thought I would let you know since I know you are busy right now."
She corresponded with a light giggle. "Just so you know, I'm done with my chores at the moment and I was heading to my room to take a break. Until you came, of course."
He laughed nervously.
"By the way, did you happen to see a boy wearing a purple yukata and a scar on his face?" She asked to him in particular.
"Yeah, in fact, Tanjiro and I saw him earlier while we were informing the others. Why'd you ask?"
She shook her head. "It's nothing. I just thought he looked strange. I saw him going down a hallway and I tried talking to him but he ignored me."
"Perhaps we don't wanna get in his way for now. Besides, Tanjiro did something that probably pissed him off."
"Oh? What did he do?" She asked with her interest piqued.
"He almost broke that guy's arm for trying to hurt one of the hosts at the end of Final Selection."
"What? He did?"
He nodded.
"Oh." She paused before speaking again. "Anyways, I gotta go now to my room."
"Yeah, me too. I have to make sure my stuff is there in my room. Hopefully Inosuke doesn't do anything to my haori or something."
What stood before the four Demon Slayers are the huge gourds the young nurses had brought for them. It is their final test to see if the results of their Rehabilitation Training paid off.
Simultaneously, they blew into their own gourd with as much air as they can muster.
"You can do it! You can do it! You can do it!" The young nurses cheered them on, thus, fueling their determination to rupture the gourds.
As they did, their gourds as huge as a chair, exploded immediately.
"YAY!" The nurses applauded them for their efforts then offered them rice balls.
"Here you go."
"Thanks!" Tanjiro said. Inosuke already had his eyes set on the rice balls.
"Don't eat it now!" Zenitsu grabbed Inosuke's arm from getting the rice ball but failed.
"Thanks, girls." BoBoiBoy said as he grabbed a rice ball and chews on it.
"BoBoiBoy!" Zenitsu shouted.
"Hm?"
"Don't it eat right now!"
"Well, too late." He replied nonchalantly.
"Please go out and defeat tons of demons!" They said with happy expressions.
"We'll do our best!" Tanjiro and BoBoiBoy, in mid-bite, said.
"I told you not to eat it now!"
"Shut up!"
Meanwhile with Zenitsu and Inosuke, the blonde was quarreling with the boar to not eat the rice balls yet, resulting them in an argument.
"Mr. Tomioka!" Tanjiro ran straight to Giyu who is standing there beside the fence. BoBoiBoy soon followed with another rice ball in hand.
"Hi, Mr. Tomioka! Want one?" BoBoiBoy wanted to offer him a rice ball.
"No. Keep it." Giyu declined. BoBoiBoy had comical tears streaming down his face.
"Are you heading into battle now?" The Water Hashira asked.
"Yes!" They replied.
"I hear that both of you have mastered Total Concentration, Constant."
"Yes!"
"You should keep at it."
"Yes."
Despite the dull tone of his voice, BoBoiBoy can tell that he must be proud of their progress as Demon Slayers. It doesn't said in his eyes but he knew deep down, he cared about them.
"Mr. Tomioka..." Tanjiro began. "About Nezuko... Thank you very much. I had no idea you were putting your life on the line. I just don't know how I can ever thank you."
Giyu didn't say anything.
"I wanna thank Mr. Urokodaki as well. He was also putting his own life on the line for us too." BoBoiBoy added. "But hearing that you also vouch for us is very reassuring to me. Thank you very much, Mr. Tomioka."
"You can thank me by doing good work." He responded. "Our mission as Demon Slayers is to kill demons. That's all."
And just like that, he disappeared.
"Right!"
The cries from the young nurses brought their attention.
They're sad that they have to be away for a mission.
"You're all heartbroken to say goodbye to me, aren't you? I can stay behind if you want!" Zenitsu offered.
"Master Zenitsu, please try to learn how to be considerate and respectful of girls." Kiyo told him.
"Right." Zenitsu agreed to what she said.
"She's right, you know?" BoBoiBoy walked over to them. "How else will you impress Nezuko if you act like that?"
"Ooohhh!! You're right!" Zenitsu screamed. "I'll do whatever it takes for me to impress Nezuko-chan!"
"I'm feeling giddy." Inosuke said.
"But still, you guys do feel a little sad that I'm leaving, don't you?!"
"We are not sad!" They proclaimed.
"Thank you for all your help, girls." BoBoiBoy smiled warmly at them. "Without you guys, we wouldn't have been this strong right now. We owe you so much."
And that was the moment they bawled out of pure joy for helping out the ones they truly cared for. The young nurses rushed over to him for a tight hug while crying their eyes out. He pats them on the head.
"This guy always gets the special treatment!" Zenitsu grumbled, feeling jealous.
"Okay! You guys!" Tanjiro then leads the group onward. "We're heading out now!"
"Yeah, let's go!"
Before he can take a step forward, he was stopped when a another person called out to him.
"Wait!"
BoBoiBoy turned around.
"Yaya?" He stood in front of her.
She smiled sweetly.
"We'll be waiting for you guys to return safely." She is standing right next with the rest of the young nurses.
"Don't worry! We'll be coming back soon!" BoBoiBoy flashed her a thumbs-up and a toothy grin.
She wanted to run up to him and entangled him with a quick hug before going. However, she resisted herself in doing so, lest she wants anyone to see them doing it. The thought alone made her embarrassed.
"Hey BoBoiBoy! What are you waiting for?!" Tanjiro yelled after his brother figure.
"Ah! I'll be there with you!" He yelled after him as well. "I'll see you again, Yaya! That's a promise!"
He runs back to his group. Inosuke smothering him, Zenitsu yelling at them, and Tanjiro laughing along with them.
"Please, come back soon, BoBoiBoy."
"Hey... Hey! Hey!" Inosuke asked worriedly. The group had arrived to a train station where the train they're going to be in is currently here.
"Wha..."
As for Inosuke, however.
"Wh-What..."
He had never seen a train before.
"WHAT THE HELL IS THIS CREATURE?!" He exclaimed. "I bet this is that thing! The master of this land! The ruler of this land!"
"Inosuke, that's a train. It's not a creature or something." BoBoiBoy deadpanned.
Inosuke ran to where they at while gaining the crowd's attention.
"See how long it is? So intimidating! No mistake! It looks like it's asleep right now, but don't let your guard down!" Inosuke declared.
"Um, no. It's a train. Haven't you ever seen one before?" Zenitsu said.
"Shush! Calm down!" Inosuke covered Zenitsu's face with his hand.
"I'll lead the charge!" His hands were ready to grab the swords from his sheathe.
"Hold up, Inosuke!" Tanjiro called him before he can do so.
"You never know, it might be that guardian spirit of this land. Also you shouldn't attack all of a sudden." He said with sparkles floating around his person.
"No, didn't you hear me? It's a train." Zenitsu blankly said. "A railway train, all right? It's a vehicle for transporting people. You country bumpkin!"
He turned to BoBoiBoy. "You know what a train does right?"
"Hey, you're asking me?" BoBoiBoy points at himself. "Didn't I tell you once that I belonged somewhere that had advanced technology than this? Of course I know what a train does, you idiot."
Zenitsu sweatdropped. "Oh right. I forgot about that."
"Hm? A train? So, is that what the crow was talking about?" Tanjiro asked cluelessly, while Inosuke is walking to a certain distance away from them.
"What's his problem?" Zenitsu narrowed his eyes towards the boar.
"He's gonna do something stupid, I think." BoBoiBoy doesn't like where this is going.
His hunch was right.
"WOOOO! WOOOOOOOOOOOOO!!!" Inosuke charged at the train with his head. "COMIN' THROUGH!"
"STOP IT! TALK ABOUT EMBARRASSING!" Zenitsu shouted.
"I KNEW YOU WERE GOING TO DO SOMETHING LIKE THAT!" BoBoiBoy also shouted.
They heard whistles coming from their right. "What are you doing?! Hey, you!"
A bunch of guards arrived on scene to know what's going on. Once they saw their swords, it meant dangerous for them.
"Hey, those guys have swords! The police! Call the police!"
"OH, CRAP! CRAP, CRAP, CRAP!" Zenitsu grabbed the boys and carried them. "RUN!"
Once they are out of sight, they quickly stopped to make a quick recovery from the commotion that they had made.
"Not one minute of getting started with our mission and you're already causing trouble for all of us, Inosuke!" BoBoiBoy screamed.
"Thanks to you, we went through hell, Inosuke! Say you're sorry!" Zenitsu yelled at the boar.
"Huh!? In the first place, why did we have to run from the police?!" Inosuke asked.
"Well, that's because we Demon Slayers aren't officially recognized by the government!" BoBoiBoy explained.
"Also, we can't just walk around in broad daylight carrying our swords because we might get into trouble like that again. Even if we explained about the demons, they wouldn't believe us and they'll think we're just making up stories." He finished.
"Even though we're working so hard?" Tanjiro couldn't believe of the new system he just heard.
"BoBoiBoy's right, you know. The government isn't going to believe anything not unless it interested them. Well, it can't be helped. For now, let's just hide our swords on our backs."
"Hahahahahaha!" Inosuke did as he heard and hid his swords behind his backs while doing a silly pose. This action weirded them out.
"You can totally see them. Put on some clothes, idiot."
In the midst of all this, the train begins its departure by signalling its engine cries. The wheels had begun to turn slowly.
"Guys! The train's about to leave now!" BoBoiBoy told them quickly.
"Are the police still around?!" Zenitsu asked.
"I don't think so. The train is so loud, I couldn't hear their footsteps." BoBoiBoy grits his teeth.
"We'll have no choice but to go even if they're around." Tanjiro said.
"YAAHAA! I'M TAKING YOU ON! MASTER OF THIS LAND!" Inosuke took the initial and ran towards the departing train.
"We should go, too!" Tanjiro also ran in front.
"Hey!"
"Okay, I guess we're doing this now! Let's go, Zenitsu!" BoBoiBoy grabbed his hand and ran to the rest of them running after the rear end of the train.
"Hey! Wait for us!" Inosuke was the first to jump in, following Tanjiro and BoBoiBoy.
"TANJIRO! BOBOIBOY! INOSUKE!" Zenitsu ran frantically and latched onto the rails.
"Zenitsu!" BoBoiBoy and the rest helped him pull up to the rear end of the train.
As of now, the train accelerated in the cold night, leaving behind a trail of dust in the wake of a new nightmare set upon them.
BoBoiBoy had a strange sense of nostalgia while being on this train. He knew he had ridden in one while he was still little. It didn't impede his thought on this mission, though. There are people who had disappeared, and it's up to them to figure out where the demon had gone to.
"YOOHOOHOOO! MAN, IT'S FAST!" Inosuke whistled. The wind blowing his mask.
"Tanjiro..." Zenitsu said while not looking at him.
"Hm?" He turned to look at him. Zenitsu mimicked.
"Are you sure about bringing Nezuko-chan along?" He asked. "Wouldn't the Demon Slayer Corps Headquarters be the safest place for her?"
He understood. Zenitsu just wanted to make sure Nezuko to be safe and sound. If he were to leave Nezuko at the Demon Slayer Corps, the memories of his late family would resurface.
No, he will never live to see that happen again fo Nezuko. He swore to himself that he won't.
"Yeah, it's fine." Tanjiro smiled and looked behind him where the box is at, with Nezuko inside.
"Wherever we go, Nezuko and I will be together."
"Don't forget about me." BoBoiBoy had placed his hand on Tanjiro's shoulder. "I'll be at your side always, Tanjiro."
"Of course!" Tanjiro smile grew bigger. "You are also a part of our family now, BoBoiBoy. We're never going to be apart again."
Feeling as he finally found the thing he truly belong, he can't help but to bask it all in.
"Tanjiro..."
The dark redhead's caring expression just felt too much for him. He let out a smile to correspond to that.
"Nezuko..."
BoBoiBoy pats the box. Nezuko had felt the touch and leans more to it, feeling the warmth.
"Zenitsu..."
BoBoiBoy stared at Zenitsu and warmly smiled at him. The latter copied and returned the same gesture.
"Inosuke..."
The boar continued to examine the train with his own two eyes. The boy still smile at him even if the other is not seeing it.
"Yaya..."
His thoughts run back to the pink hijab girl. He promised himself that he'll be returning soon to her as soon as he is done with the mission.
"Everyone..."
All the people he knew and loved, flashed back in front of his eyes.
His grandfather, Tok Aba.
His beloved father, Amato.
His beloved Power Sphera, Ochobot.
His best friend, Gopal.
His Chinese friend, Ying.
His rival, Fang.
His captain, Kaizo.
His Hero of Justice, Papa Zola.
His sworn frienemy, Adu Du and Probe.
His admiral, Tarung.
His commander, Koko Ci
His alien friends, Sai and Shielda.
His pet cat, Cattus and BellBot.
His master, Tok Kasa.
"My name is BoBoiBoy."
He opens his eyes. A new future opened up before him.
"And I'm a Demon Slayer."
