when do get lewd (sex) scene with Allison (Nana)???
I suppose by sex you mean penetration?Because some would consider joining a woman in the bathroom while she's masturbating wearing only panties and making her orgasm to be somewhat lewd.
She's late game. Probably after solidifying his more permanent relationships and getting them comfortable with each other. I like that it is the slow seduction...but yes it felt like a tease