Synopsis：My name is Kuya Hiiragi. Actually, I have six older sisters. The eldest is Hinano Ne-San, even though she looks very young. She's always worried about that, so if she's treated like a child, she gets angry. The second sister is Kaname Onee-Sama. She's a popular lawyer known as the "Ice-Cold Lawyer." Actually, she was my first love. The third is Serori Ne-Ne. She's half Japanese and half Nordic. She's the most seductive among the sisters, but her behavior is childish. The fourth is Tomoe Ne. Although she looks strict, she's actually very gentle and gets teased by the other sisters. The fifth is Takane Aneki. She's skilled and treats me like a servant. She often beats me up. The youngest sister is Umi One Mechan. She often takes care of me and does a lot of loving things for me.