Waka mibôjin: Urumu niku tsubo (2012)

Widowed at a young age, Rie masturbates every time she remembers the passionate nights she shared with her husband. Even though she knows it's wrong, she ends up having a physical relationship with her former boss, Noda, who is married with children. Misa, a senior at her workplace, encourages Rie, who is confused by her affair, to be honest with herself.