I hate wide backs, cigarette-smelling shirts, and dexterity to do household chores. My brother-in-law is the exact opposite of my taste. Sayuri Minase is a young lady who majors in piano and is a sister-in-law who attends the prestigious Ryuji Girls' Academy in music education. It is called the gift name Rosehime of the representative student who is selected every year from the students with excellent grades, and it is the target of the students' admiration. The heart of my favorite person is more comfortable than anything else, a woman. Sayuri's older sister and married woman Yuko. She overwhelmed the opposition of the house and got married soon after graduation. Even though I live in a small apartment, I live a happy life. A change will come to a humble but comfortable life. The hero who thinks it's because of his mind. However, the appearance of my wife and sister-in-law is strange. A manicure that has never been complimented and a wife who is happy to apply it. A sister-in-law who suddenly returned late.