As Shinsuke, filled with secret admiration for his father's new wife Yurine, was about to embark on a dormitory school life, he thought that would help him forget her. However, student life flew by in the blink of an eye, and on graduation day, it was none other than Yurine herself who approached him with a smile. Overjoyed at their reunion, they celebrated together like old times. Yurine tenderly kissed him, saying, "Congratulations on becoming a fine man, Shinji-kun." And so, another step towards adulthood awaited him...