HBAD-505 Sister NTR, my favorite boyfriend is sleeping with my sister.

In order to go to the university in Tokyo, as Miko lived with her sister in Tokyo, she seemed to have a very good relationship with her boyfriend, Nami Nai, who seemed to be supporting them, but secretly aimed at Ryuji, and then set him up a trap to deal with sex for himself, but Ryuji finally couldn't bear the guilt of her...