Namiki Tago debut!! Touko is transferred to the head office's sales department. At first she is hesitant, but with the support of the head Yumi and her coworker Ai, she fits right in... The two girls, who were originally lesbians, each have feelings for Touko, and secretly plot to seduce her. Touko is unable to resist their passionate and lewd approach, and is swept away by the pleasure of lesbian sex. The pleasure of two women opens up a new world for her...