Yu went to a boarding school at the same time as her father remarried. His student life came to an end in the blink of an eye, and on the day of his graduation ceremony... Kanna, his beloved stepmother, ran towards him with a smile on her face. Yuu, who cannot hide her happiness at the visit of her beloved, celebrates with her that night... The two talked all night and shared their feelings. “This is a present for Yuu-kun, who is now an adult,” Kanna said kindly.