Reina Toujou, who is blessed with both beauty and brains, is the school's number one madonna. Kawamori, her admirer from the photography club, happens to witness her livestreaming herself while she masturbated in a classroom.
Reina preempts him with the words "You saw me, and you secretly took photos of me, didn't you?". And so he finds himself repeatedly assisting her in filming more of her obscene streaming shenanigans. Things like her masturbating with a thick dildo in a swimsuit with holes. She did nothing but hardcore acts.
Certainly on the level of a lewd pervert by now, Reina starts streaming herself having sex with Kawamori and becomes a totally obscene beauty.
(Source: FANZA, translated)
Note: Published in Comic Hotmilk 2021-03.