Nezuko x Bnha

Chapter 4

Deku: Ryukyu! You guys!

Uravity: deku! Huh?

Tsu: then who was the deku we just saw?

Froppy: uravity!

Uravity looked at where tsu was looking and she saw-

Uravity: nighteye!

Deku: take care of nighteye!

Deku ran to eri but a pillar sent her flying up.

Deku: chisaki!

Chisaki: everything's messed up. You pieces of garbage!

Deku: I won't let you! (thoughts) grab her! For sure this time!

Chisaki saw lemillion's cape was flung into the air too. He was disgusted by it.

Eri saw the cape, too. She remembered what everyone was doing lemillion's words "I will become your hero!" "I will never make you sad anymore" rung in her head. She reached out for the cape as her horn began to glow.

*flashback*

Grandfather: chisaki, do you remember my daughter? Those two are her daughters. The stupid girl abandoned her children. "I thought the first one was cursed but then my husband died. They are both cursed, especially the younger one." She said. Apparently, one day, when her husband reached for his child, his whole body vanished. An ability manifested, one that doesn't take after either side of the family, unlike the older one who got it from an ancestor. It's called a mutation. It's no curse. I hear it's extremely rare, but it happens. I'm told she doesn't know how it works or how to use it. And that neither of them is aware of what happened. But it's similar to your quirk. Look after them. And while you're at it, investigate the younger's quirk. I know you're good at that kind of stuff.

...

Chisaki: similar to my quirk? Preposterous! It's not repair or restoration. It's on a completely different level *cut* How astonishing.  *cut* This is eri's quirk. The power to rewind!

*end of flashback*

Eri grabbed lemillion's cape touching chisaki accidentally separating him and Nemoto. She saw deku jumping after them holding his arm out for her.

Eri (thoughts): these people aren't going to give up. Not until I'm saved. Even if it means they'll die. I have to let them save me. I can't leave my sister. I have to go back. I have to go back! Into his kind arms!

Deku jumps and breaks rocks to get to eri. He hurts his ankle while jumping on one but he still jumps. He holds his hand out.

Deku: eri-chan! (thoughts) save her, Izuku midoriya! You have to! (out loud) eri-chan! (thoughts) you already...let go of her once.

Eri jumps holding her arms out towards him.

Deku (thoughts): this time, make sure...to keep hanging on to her!

Deku holds eri into his arm.

Deku: I'll never...let go of you again.

Chisaki: give her back!

Spikes fly at deku and he dodges them. He can't move well midair. He won't let go! I'll never, ever let her go. He'll never...let her go through that again! Neither of them!

[lemillion: what kind of hero do you want to be?]

Deku (thoughts): I want to be strong enough that no one will worry about me. To always win... To always save everyone...

As multiple spikes come close to them. Deku disappears. A huge burst of air destroys every piece of debris in the air. Deku opens his eyes and he is in the air, staring at the city.

...

Ryukyu: what happened?

Uravity is confused about where deku went. But she spots chisaki!

...

Deku (thoughts): did I blast off in my attempt to kick? Like all might's mew Hampshire smash? The air pressure propelled me at high speed? Did I lose control like when I fought kacchan?

...

Chisaki healed his arm.

Chisaki (thoughts): even though I was never told what her power was-or how to use it... Eri. Naughty girl. You know you belong to me.

...

Deku (thoughts): in other words... I used OFA at 100%? Wait! Wait a minute! That would mean my leg is...

...

Chisaki walked to rikiya and put his hand on him to merge with him.

Chisaki (thoughts): in order to realize the old man's greatest wish, I need you, eri

Ryukyu: oh no!

Nighteye: it's... Fine... For you. At least for the time being, he won't target any of you. He'll head to the surface in pursuit of midoriya and eri. Then, he'll kill midoriya.

Uravity: we have to-

She fell to the ground, she had no energy.