Imouto to Sono Yuujin ga Ero Sugite Ore no Kokan ga Yabai – Episode 1 (ES)

Miu’s plummeting math scores put her older brother Kanata in the role of reluctant tutor. The long-haired, flat-chested tsundere wants nothing to do with one-on-one study sessions and only agrees when her friend Riko is allowed to join. During the lessons Riko leans in close with teasing smiles, while Miu watches with sharp, jealous eyes. This first episode of the series zeroes in on the little sister. As the three-way tension rises, Miu’s prickly exterior begins to crack under the weight of her own feelings and the intimate situations that develop with her brother. The story explores the classic tsundere push-and-pull inside the family home, mixing reluctant affection with escalating physical closeness. Released in October 2016 by Collaboration Works and based on the Pachipachi Soft visual novel, the Miu edition delivers a concentrated look at the flat-chested little sister route, complete with the awkwardness, jealousy, and eventual surrender that define her character. For viewers who prefer the tsundere sister over the outgoing friend, this is the episode that puts her front and center.