HNTRZ-001 I ended up with a threesome of sisters, but did I do something wrong? I broke up with my girlfriend and started dating a girl who looked just like my ex-girlfriend, but it turned out to be my sister. When my older sister saw that, she went crazy. 教師の俺は教え子のももと付き合っている。誰にも言えない秘密の関係だが、昔付き合ってて結婚観の違いで別れた元カノ・かなにどことなく似ている彼女…ってあれ？！もしかして二人って姉妹なの！？そんな偶然あるん