Exclusive actress "Kashi Riia" seduces her sister's boyfriend. As work time approaches, the sister leaves him asleep in the room and goes out. When he wakes up and tries to leave, she forcibly detains him, starting her seduction! She brushes aside his desperate refusals and performs fellatio with techniques surpassing her sister's! During work or while he sleeps, she stealthily presses her advances, enchanting him, and their relationship escalates. One day, the sister and he are caught having sex by her sister. To confirm his indecisive feelings, a physical battle for his affection between the sisters begins...
