In order to protect ordinary office worker Yasumi Masaru from demons, the genius kunoichi Deura Shizuri has made a master-servant contract with him on the condition that she stays with him. Contrary to her dashing appearance as she defeats demons, Shizuri is an otaku NEET who spends all her time playing games. Shizuri is spoiled by Masaru and lives a lazy life with him, and other eccentric kunoichi gather around her... A cohabitation romantic comedy with a genius kunoichi who is an otaku and a NEET!