A new woman, Mitsuha Chiharu, is forced to share a room with her respected boss while on a business trip... Driven to despair by physical intimacy, she unwittingly becomes addicted to large penis sex. (FSDSS-596)

Chiharu, a new employee at the company, goes on a business trip to Nagoya with her respected section chief. However, due to a mistake of only booking one room, they are forced to share a room overnight. "I trust my section chief," she says. But the section chief develops lust for Chiharu while she sleeps and assaults her... While being secretly filmed, he threatens her with his large penis. Although disappointed, she continues to be assaulted until morning...