Michio has harbored romantic feelings for his close friend Kyoichi since their school days but has never expressed them. As he turns 21, their platonic relationship remains unchanged. However, one morning, Michio wakes up to discover that he is now 29 years old and the person sleeping beside him is a mystery. In this beautiful and heart-wrenching post-midnight countdown love story from Okuda Waku, Michio must navigate a new reality and his long-suppressed emotions.