Erobon! A Father and Son Sexual Spring Diary.

Kozo, who lost his wife, has a strained relationship with his college-aged son, Takashi. One day, Chikako Misawa, a former glamour model he had always admired, shows up to an interview for a part-time job at the bar Kozo runs. Meanwhile, Takashi gets to know Saki, who attends the same seminar, and finds out she's the sexy idol he's always admired...