Kiyoku Fushidara na Bokura

Ako Ootsuki is a 29-year-old virgin who has been missing the right moment for a long time and is getting impatient. On her 30th birthday, she is invited by a man she has been interested in. She lost her virginity and at the same time she was dumped and hit rock bottom... "I'll never have sex again." That's what Ako decided. However, a junior colleague at work, Nitta, asked her to go out with him, "Let's go out with each other on that condition." She can't believe it. But he keeps coming on to her...? A clumsy, sweet, and just barely less than sexual office love story begins! (Source: Shogakukan, translated)