>coerce you into sex >straddles you >calls *you* a perv
The entire Nagatoro thing is just that sempai gets off on abusive talk, so yeah, like some people like to talk dirty during sex, Nagatoro will cuddle up with him, have sex, then bathe in the afterglow, all while calling him "pathetic" or something to rev him up. ALL that talk is just foreplay. (See also this set)