The middle-aged teacher with a strong sexual appetite, Busujima Tanehisa, is ensnared by a succubus from another world named Lima Grimalkin. While immobilized by a spell, Lima starts to masturbate him, and due to his overabundance of sexual desire, she assigns him the task of re-educating succubi who have failed their exams. He is introduced to two failing succubi, Iko Bicorn and Ruku Orcus, who initially display a rebellious attitude but are subdued using mysterious tools. And so begins the re-education through orgasms of the arrogant, dark-haired succubus, Iko!
Rin Mitaka
Yuki Satou
Sahomi Koyama
Score: 6.2
Score: 5.6
Score: 7.5
Score: 5.3
Score: 6.8
Score: 4.8
Score: 7.5
Score: 6.5
