Since your birth, you've been raised for an experiment. You haven't the best marks, but a day, the scientists decide that you can, with other children, pass on the next step of the experiment. You say goodbye to everybody and the scientists lead you at another part of the building.

Inside, there are many big cisterns with hoses in. They explain to you that this is your new home. You're the first subjects of this experiment, with Dazai, Chuuya, Akutagawa, Atsushi and Kyouka.