The 11th installment of the Tameike Goro 15th Anniversary Year Project is a collaboration with Attackers' popular exclusive actress, Hikari Ninomiya! Hikari, a married female teacher whose family life is not going well, shares a room with the vice principal at a school trip scouting location. Although she resists when she is attacked while sleeping, it doesn't take long for her to fall for the polite and persistent technique of the middle-aged man she is fascinated by... After two days and one night... the married woman's Kokoro is gone on the trip...