Amid the fierce rivalry between the Kameyama and Otori families for dominance at Otori Academy, unsettling events stir within its grounds as rumors of an iron-masked intruder spread. Senna finds herself entwined in a sensual web of writhing tentacles that draw her toward a demonic fantasy, while Mao launches a fierce attack on the masked figure only to be rescued by Hitomi Kameyama. This uncensored hentai episode builds the tension with fantasy tentacle encounters and hints of anal temptation as further horrors unfold.