I did XXX with the witch in the housing complex. The special skill of Haruta, the son of a locksmith who lives in the housing complex, is picking. He meets a witch in a room in a housing complex where he went to work as a locksmith on behalf of his absent father. A witch (for some reason, a maid outfit) who forcibly involves Haruta in exterminating a strange mystery, Danmatsuma, who eats in the housing complex. The true power of the witch is released when Haruta opens the secret keyhole hidden under the skirt. Haruta, a boy who was first seen as a locksmith (partner) exclusively for witches, and the witch of an unmanned Muchimuchi sister, a housing complex-based one-shota erotic comedy developed by the two.