Following a different timeline of events, All for One is still alive but dying. Nana Shimura is the current OFA bearer and in her prime, feeling as though he needs a successor to demolish Hero Society he choose Y/n Midoriya and implants a Dark Quirk within him to claim any and all female Pro-Heroes and Students. Credit goes to Azuremegacyber on Hentai Foundry.

It's a one-shot like everything else here. Why WASTE nine lives avoiding danger when she can CREATE nine lives~?