Kana only wanted to support the withdrawn young man living in her home, hoping her kindness would help him recover. When her husband leaves on a trip and they are left alone, the fragile balance collapses into an intense and unsettling encounter. Overpowered and unable to escape, she finds her emotions and body reacting in ways she never expected. What begins as sympathy spirals into a conflicted descent where fear, dependence, and pleasure intertwine.