Furin, a housewife married to an elite trading company man, lives a carefree life. Her husband is currently on a business trip overseas, and she is living with her brother-in-law. Unlike his brother, the brother-in-law is incompetent and can't keep a job, so he's been staying there. That adopted younger brother was plotting an evil scheme out of jealousy towards his older brother and secret feelings for Karin. Karin, who comes from a good family but is slightly jaded, has a natural and carefree personality and easily gets deceived...
