This is the third title in Campus’s Uso low-priced series, focusing on Eris. It follows the scenario of what happens at Mahoshi Gakuen if the magic contract didn’t end up in Satsuki’s hands and if Souichirou had protected Aoi from being taken over by the succubus. Four years ago, Souichirou came upon a girl under a row of maple trees, with boys twice her size sprawled out the ground around her. She had crimson red eyes and radiant golden hair. He realized via his special ability of detecting lies that she was not human. The girl Eris was in fact a vampire, the only daughter of the famous Cartlet family, who had run away from home to escape her parent’s strict rules and an impending arranged marriage. Now the two of them are really close, having lived together since that fateful meeting. One day, she did not feel well and he took care of her while she recovered. She asks him out of the blue to have sex with her. What is the true meaning behind her request?!