For some twisted reason, AFO wants Shigaraki to marry someone. Specifically a girl, most likely so he can turn that innocent person into a crazy psycho like him and have the girl reproduce for more League minions.

Well, one day, you're walking in a sort of unknown town until you're knocked out and have a bag over your head. Little do they know you're actually male.

Once you wake back up, you can feel you're tied up, and the bag gets taken off of your head.

Kurogiri: Dabi. I don't think that's a female.

Toga: But he's very cute! I want his blood~

Dabi: I did what I could.

Dabi shrugs, Mr. Compress, Twice and Spinner all just stand in the corner awkwardly while Shigarakis eyes widen, thinking you're the most handsome man he's every laid his eyes on. He instantly realizes he doesn't want a girl to marry.

He wants you.