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Fujimoto Karina thought that being adopted by Hinata Rintarou would be the last time she would ever have to get used to a new family, to a new father and a sister. Yet just as she has fully submerged herself into the tranquility of living with her sister, Ema, the two girls are thrown into a pack of wolves when their father decides to marry into the Asahina Family, consisting of their lovely new stepmother and her thirteen sons spanning three decades.
[involving parts of anime, game & novel]