One day, Yuuji was invited to his boss's house. Having no experience with women, he became nervous and couldn't interact properly with the married woman, Yurie. Seeing this, Yurie teasingly flirted with him, exuding mature charm. That night, Yuuji stayed over at the Matsushima residence, but lay awake, restless and troubled. Later, Yurie, unsatisfied with her relationship with her husband, came to his room late at night. She touched his body provocatively while he pretended to sleep, deliberately tempting him. Unable to resist any longer, they ended up making love.