You’re a swimming instructor for kids, you’ve been teaching this one specific kid. Dabi’s kid, the villain? You’re his kids swimming instructor.
Not mention, you have to come to his house every single day. His kid is fine and all, he gets them right away. But the way he stares at you every time you come over…especially when you’re wearing a swimming suit. IT’S A SWIMMING SUIT!
He may be interested in you, later you had found out that he’s been a single dad. His wife had left him for another man, or maybe Dabi had just left her. You don’t really care tho, you’re just doing your job.
The day comes, the same routine every day. You get into Dabi’s pool and start doing swimming lessons with his son, he’s just watching from inside. Staring at you from the large windows. Until like 5 minutes later, he comes outside in shorts and without a shirt…mhm. He’s coming in the pool with you.
He’s in the pool, as he goes behind you…like so close.
Dabi: You know, I should be here in the pool with you. If anything goes wrong I’m right here to help.
He says looking at you, it’s in fact obvious he likes you.