Dad, I'm sorry. Please forgive me for growing up so... immature. Miyu lost her mother to illness when she was young and was raised by her father alone. Now a college student, she remained close to her father, who had poured his mother's share of love into her. One evening, her father's junior colleague, Kamimura, realized he'd left important documents at the office and came to deliver them. As a thank-you, Miyu invited him to dinner, but Kamimura found himself captivated by her, his mind wandering...