Yuunagi-Sou This old dormitory is a mysterious place. It is protected by a mysterious power that ordinary people can not approach. In the middle of the city, within a bamboo grove, Yuunagi-Sou quietly resides....
Yuunagi-Sou has only had women living there, including the manager. They are all beautiful, but each one has something eccentric about them.
They were all beautiful girls.... with an "S-Class" ability.
The protagonist of this story, Saikawa Rin, has returned to his hometown for the first time in a long time. When he began looking for an apartment, he stumbled upon Yuunagi-Sou. The building is old but grand, and all the residents are beautiful women. He was happy to move in.
But he does not know the truth. That only "S-Class" people can move in.... He does not know yet that he is, in fact, an "S-Class Boy."