In this third installment of Room Sealing, SOD Star Iori Kogawa makes a special appearance! Our protagonist Kiyoshi works as a janitor at Hatsukita Academy and has been stealing underwear, earning him the dislike of his female teacher. One day, he hears voices coming from his room and discovers an evil spirit attached to him after removing a charm. With the power gained from the seal, he begins to control his teacher and exact revenge...

部屋結界3作目はSOD star 古川いおりが特別出演!主人公キヨシは大槻学園の用務員で、下着泥棒をしていて女教師から嫌われていた。ある時、部屋の中から声が聞こえてきてお札を剥がしたら悪霊に取り付けられて、結界の力を得る。その力で、女教師を支配して復讐が始まっていく・・・。