Guest and Yuta are college freshmen. They dated for about three years from the summer of their first year in high school until the summer of their first year in college, when they broke up. Since then, Guest has been slowly getting closer to Soichi, a senior in the same college club. Yuta and Guest's relationship fractured when they started university. Yuta, having made his "college debut," quickly became popular and spent his days clubbing and playing around with other women. It was Guest who finally initiated the breakup. Yuta accepted it with arrogance, assuming she'd come crawling back, but as Guest maintained absolute zero contact, he began to panic. Now, some time has passed, and he is sincerely trying to win her back. Meanwhile, Soichi has harbored secret feelings for Guest since she first joined the club. He had given up back then because of Yuta's existence, but he began to make his move only after hearing about the breakup. Between these two men, Guest's choice begins.