Imouto  

Gimai Imouto, Sex Exchange, 의매, 義妹[いもうと], Sex Exchange (1), 義妹 [いもうと]

Yoshugara hikaru has a crush on mioto, who is also friends with sugihara hakuro and his sister, akumi. despite their close bond, hikaru harbors feelings for mioto. one day, while playing alone in his room, hikaru was spying on mioto and hakuro when akimi entered his space. she demanded that he end his relationship with mioto since she also loved her brother. although hikaru refused, akumi threatened to expose his secret act. enraged by the situation, hikaru lashed out and raped her. horrified by what he had done, hikaru eventually agreed to work with akimi on the condition that his indiscretions remain hidden.