Opposites [DekuBaku]

Backstory 1 - For their safety

You can't just leave, Toshi! At least tell me why you're doing this!

A beautiful young woman, Inko Midoriya was yelling at Yagi Toshinori, because he was leaving her.

Yagi: I'm sorry, Inko but.. If HE knew about you... He'd surely come after you.. Please.. I'm doing this for your safety!

Inko: Promise me.

Yagi: Huh?

Inko: Promise me you'll come back after you defeat All For One. I'm scared for you..

Yagi: I promise. I will return to you, Inko.

The hulk of a man leapt away. Inko rubbed her belly.

Inko: I never told him...

She was two weeks pregnant. She decided on Izura for a girl, or Izuku for a male. She hoped the baby wouldn't manifest One For All. Their body wouldn't hold.

If only she knew, All For One knew about Izuku/Izura.

AFO: I surely hope the baby manifests Toshinori's Quirk. Then, I can finally rid this world of him using his very own Quirk.

But then...

??? Shigaraki: YOU TRULY DISAPPOINT ME, BROTHER. HARM THE CHILD, AND I ASSURE YOU. THE PAST HOLDERS AND I WILL DESTROY YOUR BODY FROM THE INSIDE OUT.

All For One didn't sleep for the next 3 weeks.