Kanon, a married woman who has been married to her husband for two years. - She lives a happy life without any inconvenience, except for one complaint. - The dissatisfaction is my brother-in-law who lives in a two-family house. - I didnt really like Kanon, my brother-in-law who came with Zukazuka only when he was hungry without getting a regular job. - However, even such a married woman had a past that could not be said to her husband. - When she was a student - The past that a married woman wants to erase is found by her brother-in-law who had spared time on the net.