His son Tatsuya is depressed after breaking up with his girlfriend. Her mother, Hana, can't help but want to encourage and comfort her somehow. However, it was her first time for Hana as well, so she didn't know how to approach her. Then, the reason for her unexpected heartbreak came out of Tatsuya's mouth. Actually, I can't have sex properly because of premature ejaculation. There's nothing I can do about it. I was momentarily surprised by this unexpected sexual problem.