Yuji and Reina are living together with the intention of getting married. The two started dating after a company camping trip, and the president planned a celebratory camp for them as a thoughtful gesture. However, Yuji suddenly got called into work. Reina, who loses control when she drinks, was a concern, so he kept calling her, but she gradually stopped answering. Just when he thought he finally got through to her, her breathing was strangely ragged. 'Something's not right...' By the time he thought this, the situation had already become irreversible.
