My Sister and Her Friend Are So Erotic My Crotch Is in Trouble: The 'Miu' Chapter
妹とその友人がエロすぎて俺の股間がヤバイ 『海羽』編
妹とその友人がエロすぎて俺の股間がヤバイ 黒髪ロングでぺたんこ胸なツンデレ妹『海羽』編
Story
A black-haired, long-haired, flat-chested tsundere little sister, Miu. Her hatred of studying has backfired, and her math grades are plummeting! The protagonist, her older brother Yota, takes on the role of tutor from their mother in exchange for a raise in his allowance. But the little sister, right in the thick of puberty, refuses to be alone with her brother. After both sides make concessions, they end up holding a study session with three people, adding the sister's friend Riko! Riko has brown twin-tails and big breasts. On top of that, she's 'super' cute. This Riko takes a liking to Yota, who's good at teaching. Wearing a devilish smile, Riko constantly presses her body against Yota during study. The little sister glares at her lovestruck brother. Before he realizes it, Yota is in a state of being pressed by both girls?! A tsundere little sister in the thick of puberty, and a somewhat gyaru-ish big-breasted friend of hers. Which one would you choose?
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