In the past, Shunsuke and Kumagami, as well as their allied ability users Medoki, Shichino and Maedomari, tried to find a way to keep ability users safe from researchers with impure intentions. As Shunsuke time-leaped multiple times to find an answer, he discovered that his vision grew weaker with each leap. After one final leap which left him blind, Shunsuke used his idea of establishing a safe haven to buy an educational facility to serve as a school (i.e. Hoshinoumi Academy)...