I don't own Kimetsu no Yaiba.
Y/n was trained by his parents to become an ice, heal and light breath user and was sent to a world of demons and demon slayers for two things: change the universe and get a harem like his father.
Y/n is now heading at the place where Urokodaki stays at along with Sabiko. They decided to give him a surprise.
"Ahh. You must be Andrew's son." Urokodaki said.
"Yes. Hello there. I heard that Tanjiko has gone off to the Final Selection."
"Yes. She swore to herself that she will protect her sister at all cost."
"Speaking of sister, where is she?"
"Oh she's here. Sleeping." The masked swordsman said. He gestured to what is simply the most beautiful thing he has ever seen.
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"Cute." He whispered. He turned to the previous Hashira. "Is Tanjiko alright on her way to the Final Selection?"
"Yes. I do hope that she's ok. I'm afraid she's going to suffer the same fate as Sabiko."
"Well about that..."
(After explaining)
"So you're telling me that you not only you resurrected Sabiko and Makomo, but you can also use different types of breathing?" Urokodaki wanted to think this was all a dream. His student was standing there looking healthy as ever.
"Yup."
"...Kids these days are getting stronger I swear." The former Water Pillar muttered. While he enjoyed that his old friend's son revived them, it is a bit unfair that all of his kids are somehow overpowered that it's not even a special occurrence anymore.
Y/n and Sabiko chuckled.
"Well. Can we follow Tanjiko just in case?"
"Well normally we don't allow outside help during the Final Selection, but I guess you're the exception then."
"Thanks master Urokodaki."
"It's no problem." After that, they went inside the forest.
"I swear if they somehow got together, I would not be very surprised." He knew the Gremory charm so well. One time that The Galactic Dragon Emperor somehow seduced the female clerk without even saying a word.
(Meanwhile)
"Giyuko is so precious when she's little. It is my fault that I'm gone she has been so stoic and emotionless." Sabiko blamed her own death as to what caused her surrogate sister endured after all these years without her.
"It's not your fault. Death is inevitable. Now you're alive again, why not spend more time with her after this?"
"Hmm... Yeah. I should do that. Thanks Y/n."
While they're talking, they're just cutting demons like butter and dodging without even looking.
On their way there, they saw Tanjiko is fighting a blob that is a demon.
"That...That's the demon that killed me!" Sabiko is now fuming in anger seeing her killer attempting to destroy the young slayer.
"Well, the floor is yours. Finish it off."
"With pleasure." She charged at it with killing intent.
As they were fighting, Tanjiko spotted someone familiar to her.
"Sabiko?" She muttered. Why is she here?
The demon turned and saw what it couldn't believe it's eyes. She alive?! How?!
"Bu-But how?! I killed you!!"
"And I'm gonna slice your sorry ass back in where you belong! Hell!! First Breath Form: Surging Strike!!" She performed multiple slashes of water towards the demon, injuring it severely.
"GAHH!!! YOU BITCH!!"
"And that's more where that came from! This is for everyone that killed by you!!" She unleashes the final blow on the head. It was done. Her death and others are avenged.
"Woah..." Tanjiko awed.
As the demon's body began to disintegrate, it muttered his brother for some odd reason. Saying it's too dark in here, save him and he didn't mean to.
'So he was just a child lost in the dark before turning into one. Poor soul.'
Tanjiko then sympathize the demon saying it's okay, that he's now dying in peace. Shocked by her kind actions, the demon shed a lone tear and finally perished.
At the distance, Y/n closed his eyes.
'There are good souls taken by a good soul that was blackened by a corrupt person. I hope I can change the timeline.'
"Y/n. Come on. Let's go to the Wisteria forest."
"Coming".
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AN: Sorry for the delay. Working on multiple stories.
