"Oh, fuck, you're getting good at that," Sengo observed, fingers slowly clenching on the sheets, legs spread wide to give his cousin the access she needed. Getting laid has always been one of the top priorities in his life, and he's been shaving himself bare for years to make dick-sucking more convenient.

At first, he does little other than gasp and let his hips roll gently, but slowly, as she gets bolder, so does he, reaching up to stroke fingers through her hair, and finally to take hold and start guiding her mouth further down over him. He makes eye contact with her while he does, steadily, looking for signs of discomfort or panic - not yet sure if or when those will stop him. "Fuck, just like that," he says, encouragingly.

He wants her to have a good time, but pushing boundaries is a constant thing for him.