Iwatani Yori is a 39 year old woman who leads a quiet life while working at the library. She thinks things like love and marriage are too troublesome. Of course, it wouldn’t be much of a romance manga if there wasn’t someone introduced to disturb her pattern.
A handsome, but suspicious man appears before her, claiming to be an old childhood friend. Maki has cared for Yori since he was a boy, but now he’s a married man–married to a woman who looks exactly like Yori. This apparently doesn’t stop him from chasing down Yori who desperately tries to push him away. What kind of future could this love (?) have?
I’m not sure about the whole married man angle, but I liked the banter in Otoko no Isshou, so I’m willing to give Nishi Keiko’s newest work, Ane no Kekkon, a go!