the cute guy next door (might be a villain)

Midoriya Izuku has a problem. As a quirkless analyst working under a fake identity, he has to be careful about everything he does. He's quickly developing a crush on his new neighbor who seems like a nice enough guy, but he has some concerns about a few things he's noticed. Fake names, odd injuries, shady meetings, and poorly hidden weapons point to a worrisome possibility...