Ippei is a guy named Koshio, who got married to Areyoareyo when he was a janitor at his wife's company.Ippei's wife is a free-spirited woman who travels the world with only one intuition, and even after she got married, she hardly ever returned to her house.Ichika was a stepchild of such a wife.She also resembles her mother, free-spirited and carefree.Her hobby is posting selfie images on SNS.One day, Ippei is asked to help with the photo shoot.Triggered by that, the two of them have a naughty relationship.