The story happened in a private Shanxing University. Nagase Iori, who has a warm smile like the spring breeze, has a black tongue on the outside, but in fact Keiko Rice, who is very delicate and fragile inside, can only be called ordinary Yaegashi Taichi, Kiriyama Yui with strong martial arts but male phobia, and Aoki Yoshifumi who is frivolous but very single-minded. These five members of the cultural research department live a quiet life as usual, but what they don't know is that their fate will soon end because of something.

Personality transformation happened without warning, and this bridge that only happened in science fiction made the staff at a loss. However, after the shock, excitement followed, and there were few opportunities to experience the world with other people's bodies. However, with the change of personality, the hidden feelings and sad memories hidden in the hearts of the Ministry members can no longer be hidden. Can they be optimistic about these sad or cruel facts?