{I'm sorry for grammatical errors, wrong vocabularies, etc. because English is not my main language, but I hope you can enjoy my story :)}

"If so, from now on we will not separate anymore." Zenitsu gestured with his pinky finger.

After Suzumi did same as he did, Zenitsu did the pinky swear to her which means they promised never to leave each other like they used to, or maybe.. just him.

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Kimetsu no Yaiba

Credit : Koyoharu Gotouge

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Chapter 5


"Nezuko-chaaan~" Zenitsu said while tickling Nezuko's feet, made her laughed. Suzumi smiled, she was happy to see Nezuko's high-level cuteness.

"Zenitsu, you like this girl, right?" A question came from Suzumi made him surprised.

"Ah, n-no, it's not like that," he said, didn't want to admit the fact.

"Hmph, the look on your face says otherwise, after all your speech is nervous like that."

Zenitsu was silent, he knew that he couldn't lie to the girl who sat next to him. "A-actually... yeah, I like her." He admit while his fingers on his cheek, he choosed to looking around except her.

"I'm not surprised."

"But Zenitsu, I hope you really love her, don't do what you did to other girls before," she said while patting Nezuko's head.

"Eh? EH?!!" Zenitsu was shocked, his face turned to red.

Suzumi moved her finger to her chest, pointed to her heart. "I can feel it, that's why I know you like this cute girl." She smiled with both the eyes were closed.

When she played with Nezuko again, Zenitsu secretly watching her, he remembered Shinobu's words, she had heart problem and maybe won't live much longer.

Zenitsu started to crying silently, how can she would leave him for the second time even though they have just met.


"Zenitsu, please come to my house, Onee-chan cooked lunch for you too."

"Zenitsu, look! I found a cute cat."

"Thank you for the gift, Zenitsu. I like it so much."

"Zenitsu, happy birthday! This is a little gift from me, but I hope you like it."

"Zenitsu, Onee-chan made pendant necklaces for us, she said I must give it to you-"

Tanjirou woke up from his sleep, he saw Zenitsu who were beside him sat with his back to him. "Zenitsu, what's going on? Usually you sleep at this hour."

He did not answer right away, his wistful eyes still focused at his necklace which he held.

"Tanjirou..."

Heard his name was called, Tanjirou woke from his bed.

"Am I wrong if I let someone die?" he asked with his bangs closed his eyes.

Tanjirou was stunned to see Zenitsu's attitude changed dramatically, especially when he heard the question. "Why did you ask like that?"

"Because... someone will leave me for the second time, and never come back forever."

"Someone you mean ... is it Suzumi-san?"

That yellow-haired boy bit his lower lip. "Yes..."

"Monitsu, is it because her heart problem?" Inosuke asked suddenly, made both of his friends surprised.

"Inosuke, where did you know that from?" Tanjirou asked.

"Ah, I overheard Monitsu and that Insect Pillar talking about this on the day when that girl was brought here because she fainted."

"So that's it."

"Yeah... And now I don't know what must I do."

"But Monitsu, can't she control her heart with breath of gems?"

"That's right but... she doesn't do it except when fighting demons, that's why I wanna ask her actually, but... I can't."

"I'm sorry why I didn't know her problem from the beginning, even though we were always together... This is my fault..." When Zenitsu started to cry, Tanjirou and Inosuke hugged him.

"This isn't your fault, Zenitsu... We don't know why Suzumi-san hid it from you even though you're so close with her... There are some reasons we don't have to know it."


Shinobu was going to check Suzumi's condition until she found that the girl was not in her room.

"Kanao, did you see Suzumi?" Kanao who were in the garden shook her head without talking even a little bit.

"Aoi, do you know where is Suzumi?" This time Shinobu asked to Aoi who prepared for breakfast.

"Ah, Shinobu-sama, I'm really sorry, Suzumi-san decided to get out from here last night although I asked her to not leave." Hearing Aoi's explanation, Shinobu could only sigh, she feeling worried because she knew what would Suzumi do.

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"Hey, Kentarou, why we are called by The Insect Pillar to her room?" Inosuke asked.

"I don't know, but I think something bad is happening." Tanjirou answered seriously.

"Maybe we will be told to training 24 hours non-stop." Zenitsu said in fear while tugging at Tanjirou's back shirt.

"Well, let's see later."

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"Sorry for suddenly calling you here, guys," Shinobu said to those three who already sat down in front of her.

"No problem, Shinobu-san..."

She turned her gaze to Zenitsu, making him nervous. "W-what? Why suddenly you looking at me like that?"

"Actually I don't want to say it but I really need your help, especially Zenitsu-kun..."

The yellow-haired boy's eyes were widen, why is she expecting him the most from the squads? Even though he had thought he was the weakest of them.

"Your close girl friend... has left this place from last night."

They all were surprised, from now on, there are more things unexpected will happen.

"That's why are you willing to do it? in order to save her life... But if you don't want to do it, it's OK, I'll do it myself and ask Oyakata-sama's permission not to carry out the mission that must I do this time."

They exchanged glances, their eyes signaling the opinion of the other before finally agreeing to do it. "Shinobu-san, don't worry, we will find her... Just do what is your duty," Tanjirou said representing his friends.

"OK, then I will tell you all a place that is likely to be her destination, I hope you guys return to being fine and not hurt to bring her back."


"Where are you? Come out please! Now it's late at night, why are you still not showing your sharp fangs and scratches?" Suzumi yelled while holding her nichirin sword.

There is no answer, the forest inside the mountain was very quiet, naturally because no one would live in such a scary place except for certain creatures.

She smiled, both of her blue eyes slowly turned black because of her anger. "Alright, if you don't want to come out, I will force you to come out and I will make sure you will taste the sharpness of this sword to make you turn into dust instantly."

Demon who is being sought by her is the one who killed her sister, she promised herself to keep trying to get revenge by sending the demon to hell.

From information obtained by her, Kurumi was killed in a forest called 'death forest' which is on a mountain not far from Mount Natagumo.

In fact, Oyakata-sama had forbidden her to go there, but she was still desperate.

She thought she would be able to die peacefully after finding demon who had taken the life of the only her family member left at that time.

"Tch.. why is there a girl who set foot on my mountain at will? Have you ever permission before?"

She turned her body and was surprised to find the origin of the voice.

She saw a demon hanging on a tree branch while licking his finger, it seemed he had just enjoyed a delicious meal (of course it's human flesh and blood).

"Oh, wow! What a beautiful creature! Girl, I promise I won't kill and eat you if you want to marry me."

Hearing what just he said, Suzumi felt disgusting. 'Wait... If I'm not mistaken, he looks like a man whom I met few days ago.'

"Hey, tell me... are you the one who killed my sister?"

"Hm? I don't even know who you are, and now you asking me about your sister? It's so impossible I know your sister."

"By the way, you haven't answered my question yet..."

"You must be lying! I'm sure you're the one who killed her!!"

The demon suddenly attacked Suzumi with his claws rapidly, causing her blood to flow out from her left face. "Shut up! You have such a beautiful face but make me sick of you! You know, all of demon slayers who came here are dead, so be careful with me."

She touched her face that felt sore, the demon attacked her while her guard was down until she could not fend off his attack.

"A, I remembered... Someone once said that he had killed a girl and one day her sister would definitely come for revenge, I never thought it was you."

Suzumi was surprised, actually who was the demon that killed Kurumi? Why he knew that she had a sister?

"You said 'he'... that's mean that person, no, that demon is male, right?"

"Huh... Whatever you say, it's definitely not me who killed her."

"Ok, it's finished, I don't have time to talk with you."

When the demon was going to leave, she prepared her katana to cut off the demon's head.

"Oh yeah, I forgot one thing... that I had promised not to let a human being live after entering this mountain!!" Right after saying his last sentence, a needle-like object came out of his hand and targeted it with lightning speed to her.

She quickly avoided him even though the devil kept moving to approach her. "Nice thing, but you can't kill someone like me with it."

"Huh... You won't be able to say that after receiving this!!" He attacked Suzumi with the same object but with a far different amount, making it difficult to find a gap.

'Gems breathing fifth form... Typhoon Sapphire!' Because of that form, she managed to reverse the direction of the needles.

'Damn... She isn't an ordinary girl.' The demon decided to confine her in a transparent, airtight cube full of poison to kill her slowly.

"Among the demon slayers, there is such a thing as Pillars, their skills are the greatest of the others.Therefore, if you meet them, don't waste your energy to attack, just kill them immediately."

'From her strength it seems like she is indeed one of them...'

'Good, just by killing her I can get a higher position on that person's side.' He smiled wickedly as he watched Suzumi moved her sword repeatedly so she could be free from the cube.

"Alright killer, face me now without resorting to cheating!" She shouted after being freed, but unfortunately a cloud of fog appeared that caused she to see nothing.

Suddenly the demon appeared right in front of her and immediately pushed her body to crash on the ground, he trapped Suzumi with his body so she could not move.

"Good try, but it's useless, you won't be able to beat me," he said while biting her neck with his fangs, both his hands hold her hands firmly.

Suzumi tried hard to release her body from him, but all changed after she felt a liquid entering her body through the bite.

"The poison I put into your body through my bite a thousand times stronger than the poison from the needles and the cube earlier, so it's better you pray now before death picks you up."

"If you hadn't been bad from the beginning I wouldn't have done this to you."


"We have to find her as soon as possible!" Zenitsu said, he walked in the front, not as usual.

"Hey, Kentarou... Is he really Monitsu?" Inosuke whispered to Tanjirou.

"No, he isn't Monitsu, but Zenitsu," he replied. A few seconds later, Tanjirou stopped in his steps followed by Inosuke.

"Hm? What's wrong?"

"Hey, you guys! Why do you stop your steps?!"

"Smells blood," he said seriously.

"Where, Tanjirou? From where you smell those blood??" Zenitsu asked while pulling Tanjirou's haori sleeves.

As time goes by, the smell of blood is increasingly smelled by Tanjirou's nose. "Here!!" Tanjirou ran to the source of the smell followed by his two friends.


'Am I ... dead?'

Chapter 5 - end

Note : I'm sorry for using '-san', '-kun', etc. because I feel more comfortable with it as you can read without it

Thank you for your understanding c: