Ane No Kekkon. Iwatani Yori is a 39-year-old woman who lives a peaceful life at the library while working. She feels issues like marriage and love are too distressing. A stunning but suspicious man is approaching her, pretending to be a relative of old age. When he was a boy Maki has cared about Yori, but now he's a married man–married to a woman who looks just like Yori. This does not seem to deter him from chasing down Yori who is desperately trying to drive him away. Which kind of future will?