Daiki is a pervert teacher who get excited by seeing beautiful girls get embarrassed, he even did the same to his own childhood friend, Hina, tying her hands, playing and did dirty things with her body. However, he began to get bored and decided to get his new target to fulfill his sexual desire. A young lady with an ancient bloodline, Mina Shijo, became a candidate of his new target. Mina is a cheerful girl but somewhat naive, everyone gets along with her because of her good nature. Her personality has piqued Daiki’s interests. He begin to plan a situation where she unable to refuse his request and plunges into his trap by taking advantage of his position being a teacher.