Gaman ga Dekinai Dotei Aniki to Sunao ni Narenai Hanko Imoto

Original Name: ガマンができない童貞アニキとスナオになれない反抗妹 / A virgin brother who can’t hold back and a rebellious sister who can’t become Sunao
Summary: ❤️❤️❤️ [Whisp] What kind of sister is your sister? Depending on the gifts you give her, her appearance and personality will change each time you play. Your very own little sister is here!

あなたの妹はどんな妹? プレゼントにより、容姿や性格がプレイごとに変化。 あなただけの妹がココにいます!