During the fight with Sensui, Koenma and Mitarai were in the cave, still with Yusuke, who was still lying dead on the cold ground. Koenma was resting his ear on Yusuke's chest, letting out a soft sigh.
"I don't get it..." Koenma said, removing his head away from his chest.
"He's too young to be dead," Mitarai said.
"No, I mean that even though his heart's stopped, his ghost has yet to rise out of him," Koenma said.
"And that's not...normal?" Asked Mitarai.
"It usually emerges immediately, and the last time Yusuke died, his ghost popped right out of him," Koenma explained.
"Wait! If he's come back before, maybe he's not dead."
"No, trust me, kid. He's dead as a doornail. His soul is just M.I.A."
Suddenly, bright light emerges into the cave as it stops in front of the open tunnel to connect with the demon world. That's when there were troops that had appeared standing in the linemen and females that were with their leader.
"Who are these people? Are they on our side?" Mirai inquired.
"They're called the Spirit World Special Defense Force. They are the best of the best and Spirit World's last line of defense." Koenma explained to Mitarai as he narrowed his eyes directly towards the captain leading the troops. "My father only calls upon them in the most desperate of situations, and I guess this hole qualifies. He depends on them, unequivocally, to get the job done." Koenma inhaled, saying, "Which means my father has given up faith in my ability to do so."
The captain faces the two soldiers, "I need three of you to start sealing up this hole right now. Saitou, Sourai, Oohou! How long will that take you."
"Sir, with the three of us working together, it should take at least ten days, sir," Sourai responded.
"You've got a week, understood?" The captain sharply said.
"Yes, sir!"
"That's what I like to hear. Now, get on with it!" He commanded.
While the three soldiers were going to be working on closing the hole, the captain commanded the other soldiers to go inside and seal the gateway that had unlocked. The captain's name was Ootake, and the squad leader, as he approached with two army men side by side to approach Koenma and Mitarai near Yusuke's corpse.
"Koenma, sir. Are you all right?" Ootake asked.
"Well, I did bite my tongue..." Koenma says in sarcasm.
Ootake lets out a small grunt, orange," Return to Spirit World at once, where you can recuperate."
Koenma knitted his eyebrows together, glaring at the captain, responding, "I'm not going anywhere. This is my mess, and I'm going to clean it up."
"Forgive me, your highness, but I'm afraid that I must insist, for king Yama has declared this a state of martial law," Ootake said, narrowing his gaze at the prince, "Meaning, for now, my jurisdiction supersedes yours. I'm sorry about this, sir."
"I know what martial law is, Captain; I'm no idiot." Koenma backtalks at the captain with a slight frown formed on his lips. "But you are if you think I'm gonna back off without a fight for a second."
As Captain Ootake heard the prince declining his orders, he scrunched up his face saying, "If you refuse to vacate, you'll have to witness something harrowing."
Koenma raises his eyebrows after hearing the captain being slightly offensive, "Are you...threatening me now, Captain?"
The captain stood silent as one of the soldiers aimed for Mitarai, hitting him with their attack. Koenma demanded not to harm him.
"No one will stand in the way of our mission..." Captain Ootake said. "...To kill Urameshi."
"What?" Koenma exclaimed.
"Spirit Detective Yusuke Urameshi..." Ootake starts to explain the bio background of his history,"...a direct descendant of the Mazoku."
"You're out of your mind!" Koenma exclaimed in disbelief to hear the shocking news. "That is a vile accusation. And to level it in front of his corpse? It's ridiculous!" Koenma ridiculed, "His mother may act like a monster, but his parents are human! I had an ogre do a background check."
"True," Ootake said. "As were his grandparents and great grandparents. But if you continue back much further..."
The prince gasped, and sweat ran down his forehead, "The Activism of a Mazoku."
"That's affirmative, sir...We think Urameshi inherited his demon blood through that rate phenomenon. And if we're right, which by all signs we are, he's a genetic time bomb just waiting to trigger."
The news shocked the others of Yusuke being a half-breed demon to inherit his ancestor's demon blood passed on to him. The troop must destroy his corpse for good. However, Koenma and Mitarai refused to let them get rid of the spirit detective.
"Captain! Look at Urameshi. He's glowing!" One of the troop members said.
Yusuke was floating in mid-air, still unconscious, as Captain Ootake said, "No, it's the time! That's not Spirit Energy. He's emitting's Demon Energy! The transformation has begun!"
The captain ordered his troops to go around and aim their attacks on Yusuke; however, something was cawing, and it came from above the ceiling. As they were seeking their attacks on Yusuke, willing to think they'd succeeded in destroying him, but they had failed. Something was protecting him from getting hurt as the smoke cleared to reveal Puu in a much bigger size.
"Man, you people know how to make a guy feel welcome." A familiar sarcastic tone alerted the men and a female in the room.
"We're...too late...the Mazoku is alive!" Ootake said.
"Puu! Puu!" The big bird happily chanted to see his spirit guardian was back alive as Yusuke smiled warmly at him, petting the bird.
"Hey there, little buddy. I see you've been drinking your milk while I've been away." Yusuke said as his smile changed to a mischievous smirk as he glanced over at the soldiers, "Ya know, even though I was dead, I could still hear some of what you guys were sayin'. So then...I'm...some evil, vicious monster..." The troops had fear in their eyes, frightened by Yusuke's nasty tone.
"My teachers have been saying that for years. I just thought it was a figure of speech." Yusuke is self-assured after hearing the men talk about his family ancestors passing their demon blood to him, making it seem like he was a monster. That's not quite right. He let out a solid red aura that filled the room the almost blinded the others of his powerful demon energy that wasn't his spirit energy anymore.
"You see, Koenma, sir. how strong his Demon Energy is?" You take inquired.
"No...Not Yusuke." Koenma protested.
As the red aura dies, Yusuke starts to act terrifyingly, and the soldiers think of him as what they expected a Mazoku demon to act like. Just as the soldiers were acting like cowards, Yusuke laughed hysterically in amusement.
"Gotcha! You suckers!" He giggled.
"Anyway, I better push off to Demon World...Sensui gave me a death sentence as a gift, and I'd be a jerk if I didn't return the favor." Yusuke said in a severe tone.
"But you can't go anywhere! You have to be quarantined." Ootake said.
Yusuke growled, glaring over at the captain, "You even think about stopping me, and I'll bite off your head, mustache and all!"
The captain trembled at Yusuke's warning, "I knew you couldn't hide your true character. You transformed into a demon menace."
"Look, jerk. Give me a break; it's called a running joke. I'm the same." Yusuke forced a broad grin on his face. "Yusuke Urameshi, fearless protector of the good stuff, with a healthy kick of nastiness and general hate for authority. And nothing as trivial as a violent death or a few drops of Demon's blood mixed within with mine will keep me from helping out my friends in savin' the world and kickin' the bad guy's ass!"
Koenma lets out a sigh and laughter in relief, "Hold on! I'm comin' with you!"
The captain holds back the prince, saying, "But, sir! You would be disobeying a direct order from King Yama! Besides this hostile beast-" He was cut off by Yusuke's foot on his face as Yusuke glared at him.
"Pass this to King Yama for me," Yusuke said as the captain fell back, and his troops ran over immediately to check if he was okay.
"You really should wash your feet more often, Yusuke." Koenma joked.
Yusuke and Koenma ran over to climb on Puu's back, "Let's go to Demon World, Puu!" As Puu flapped his wings, he went inside the tunnel to fly all the way to get to Demon World.
Yusuke P.O.V.
After As the three were ready to get back up and fight on, a spark of red light and a cawing sound came from the thick sky on the horizon appeared Yusuke and Koenma riding on Puu. Puu was much more significant, and he must've evolved since they were heading straight down towards them as Sensui couldn't believe his eyes to see the spirit detective back to life.
"I'm sorry I got delayed. Traffic was a bitch." Yusuke said with a cocky grin. "But I'm back! And I'm ready to finish this!"
As Puu landed, Sensui glared over as the others reunited the loss of their friend to find him alive. They thought it was a dream, or at least Kuwabara thought this whole thing was an illusion.
"Some friends you are! Dictin' a guy while he's down and hoggin' the bad guys all to yourselves." Yusuke said, walking over towards his friends, wearing one shoe on his foot as he scowled at his friends. "I gotta admit, I'm disappointed in you jerks. But did you honestly think I'd lie there and let you guys fight for my battles? Gimme a break!"
"Urameshi! But you were...Well, you were dead! I swear it!" Kuwabara exclaimed as his eyes popped out the back of his head. "Your heart stopped beating! I doubled checked!"
"Yeah, I can't explain that." Yusuke raised an eyebrow and pointed at his chest, "In fact, my ticker's still not tickin'. I guess I should be worried, huh?"
Both Kurama and Hiei chuckle as they burst out laughing, and Yusuke. Kuwabara, Tanjiro, and Nezuko were both confused about what they were laughing about, considNezukong Yusuke's heart wasn't beating generally as it should be.
"You'll get used to that. You see, Demon hearts don't beat in the conventional human sense." Kurama explained.
"Demon?!" Kuwabara exclaimed in disbelief to hear that word coming out of Kurama's mouth.
"Yes, Demon," Koenma spoke up.
"I keep hopin' I wake up soon." Kuwabara let out a sigh.
"It's no dream. I'd say that Yusuke has had dormant blood inside him, Mazoku blood, which explains a few things." Koenma explained.
"Yeah, funny story...One of my ancestors way back was this Mazoku guy..." Yusuke starts explaining to Kuwabara and the others about learning his family history, "So, when I died, I was able to come back, but more like him."
"Ah! So you are a demon!" Kuwabara yelped.
Nezuko stares in awe to see Yusuke standing there in one piece, acting as if nothing happened between Sensui and him. Yusuke glanced at Nezuko and gave her a cocky grin chuckling down at her.
"Glad to see you were okay, Nezuko. It seems like they did a good job babysitting you." He said, kneeling at her level as she glanced over his shoulder to see the giant bird. Yusuke noticed what she was looking at and chuckled, "It's okay. It's just Puu-only bigger." Puu leaned over to nuzzle his head against Nezuko as she hugged him, not smiling.
"I'm glad you're back," Tanjiro said as he went to pet Puu.
Yusuke glanced at Sensui, saying, "Sensui, this ends now. We're going to have a rematch."
"I'm afraid our battle is over," Sensui replied as Yusuke's face fell. The others glared at him, except Nezuko had a terrified expression. "There is no use fighting when the mission to unlock the gate to the human world is closing in."
"What?" Koenma exclaimed.
~Time Skip~
Yusuke battled against Sensui while the others remained far from the battle but continued to analyze their technique and Spirit Energy. Tanjiro was even amazed by how strong Yusuke had developed after recovering from his death after Sensui thought he had killed him. Eventually, they matched up against each other until Yusuke encountered some difficulty with his power overflowing, and a mysterious voice spoke into his mind and took over his body.
He transformed as opposed to what a Mazokou demon breed would have in their blood pumping as it was craving blood. The person who wasn't Yusuke was someone else and took on Sensui as if he was a piece of paper to break every inch of his body, just as the person controlling Yusuke was fighting the urge to resist killing Sensui with a Spirit Gun attack, that ended it all.
The others soon arrived, where Sensui was left for dead; Yusuke didn't want him to die and wasn't the type of person to kill anyone. He tries to explain to the others that the person who was "Controlling" him wasn't "actually" him. Itsuki came across them saying Sensui had a terrible disease and should remain dead to let him rest in peace.
It has been decided as they let Sensui go with Itsuki to the dimensional world as they returned to theirs.
Author's Note: Hi, it's been a year since I haven't updated. I have been doing a lot of things since I don't have much free time. I will finish off this book if I can. I had some ideas to write up here to share with you guys!