幼馴染のイジメっ子3姉妹が地元に帰ってきてから様子がおかしい。 (Associated Names)

The main character, Tanabe Yuichi, had triplet sisters who were his childhood friends. The oldest sister, Shirota Miyako, is black-hearted and cute, the second sister, Shirota Haruka, is a tsundere, and the third sister, Shirota Minami, is quiet and reserved. Yuichi was bullied by the triplet sisters of the Shirota family when he was in…