GhostGirlFucker68

Yami Iwatani, a bitter man reborn after death into the My Hero Academia universe, finds himself living as the son of Angela, a gorgeous retired hero trapped in a toxic marriage. 
Gifted with a Harem System and a mysterious, dormant quirk, Yami vows to rise above his circumstances. 
Navigating a childhood overshadowed by his father’s cruelty and his mother’s blind loyalty, Yami secretly trains his young body, fueled by anger, ambition and the desire to fuck and impregnate as many women as humanly possible. 
When his quirk violently awakens, Yami takes his first step toward power, determined to reshape the world, break free from societal chains, and claim the life he’s owed.

My Harem System In My Hero Academia

I have a shitty memory and often forget stuff, so for future me and my readers, I'll keep track of Yami's techniques and other stuff here:

[From now on, you can share your stamina and resilience with others so long you physically touch them, skin against skin.]

Yami had discovered he could control the movement of his bones, manipulating them like external weapons or limbs.

[Description: Allows the user to suppress or activate the reproductive systems of any living being they touch. Perfect for ensuring no accidents happen—or for making sure they do.]

Yami can force a woman to start lactating.

Creates two pressurized fluid jets from the eyes. Strong enough to cut cleanly through a stone column and split huge clouds.

A freezing ability that lets you freeze your body parts and transfer the cold to others by touch.

Yami (Rant and techniques)