Seiso de Majime na Kanojo ga, Saikyou Yaricir ni Kanyuu Saretara…? THE ANIMATION

Oikawa Miu enters university still dating her high-school boyfriend, Masahiro, and still treating sex as something they have not done. She played tennis in high school, so a tennis circle looks safe. The seniors who pull her in call it Love All. Off the court it is a recruitment machine: drinks first, “king’s game” second, phones out the moment she cannot refuse.

At the welcome afterparty she is poured past her limit. Clothes come off on command. A senior girl is paired with her for a blowjob contest; the loser takes the first penetration. Miu loses. Her first time is filmed, finished inside, and saved as leverage. From then on the circle does not ask. They use the photos, they use the group, and they use Masahiro’s presence so she cannot pretend it is a secret.

Later sessions move to the court itself: strip tennis, a point lost for every layer, then a penalty match played naked while members take her from behind and shoot the climax on their phones. Pleasure is not framed as romance. It is piled on until the girl who could not say no starts asking the room to come with her. The OVA stays with that slide from polite girlfriend to circle toy in a single 25–30 minute runtime.