Jin and Saeko work at the same business hotel and have been dating for two years, secretly from their coworkers, but lately Saeko has been feeling a bit bored and lacking excitement. She is excited because she is being approached by the opposite sex more and more often, but Jin sees her in the act. It seems as if nothing happened, but later, when she is in the guest room, Jin appears and, in a fit of jealousy, pushes Saeko down...!