The Children of Shiunji Family

The Shiunji family consists of seven children: two sons and five daughters, each possessing equal measures of intelligence and beauty. Their father's wealth contributes to their popularity in town. Arata, the eldest son, has been accustomed to being the center of attention for his sisters' antics, but his life is turned upside down when their father reveals a long-held family secret about their siblings at their youngest sister's fifteenth birthday.