Just the two of them, alone, after school, the school is most likely deserted spare for a few teachers, and he's once again catering to her kinks, oh boy
This manga is the spiritual successor to Nagatoro imo. It has the same blend of horny and wholesome, it tickles my itch for gender dynamics in a similar way and it has similar psychoanalytic slave/master bullsh*t going on in the background.