From a caste based high school, bottom-tier Masatsugu Naomi is caught up in a summon of his class to a different world. However, as soon as they arrived the king said, "This guy is unnecessary because he only has clumsy skills " and it is concluded that he is to be forced to administer the orphanage, which no one wants to do. Unfortunately for the orphanage his skills were cheat skills that cause the girls to cling to him. In order to "defend" the girls that depend on him, he must operate the orphanage while overcoming the powerful people, authorities, and former classmates that surround him.

Now that he enters his high school career, Satomi Koutaro begins his life living alone in an apartment that only costs him 5000 yen per month, an extremely cheap deal even for this small apartment. There's a catch: the apartment is apparently haunted by a cute ghost that has driven its prior occupants away. Next thing he knows, not only is there a ghost trying to drive him out of his new home, but magical girls and other unique female characters turn this small apartment into a battleground of sorts. (Source: MangaHelpers)