Four body, one soul and one heart. That is kuroko Tetsuki, Tetsuchi, Tetsuya and Tetsuna. The Quadruplets, these four are so close to each other that you can't separate. But because of one secret and one mistake. The single soul was separated to four to different places, leaving poor Tetsuya in Japan. After ten years without communication to each other. One night, the souls reunite into one again.All Rights Reserved