Alto Goldfilled, a diligent student at the Ortigia Academy of Magic, aspires to become a powerful sorcerer. But he is unable to become one as, despite his excellent grades and strong commitment to his studies, he fails his summoning class. With the threat of repeating a year hanging over his head, Alto tries following an old, worn-out grimoire in a desperate attempt to resolve his situation. To his surprise, he succeeds and summons a powerful demon named Vermeil. As a sign of gratitude for releasing her, Vermeil agrees to become Alto's familiar, sealing their relationship with a deep kiss. Little does Alto know what else he is capable of and what Vermeil's past hides.

We lay our scene in the fair Dahlia Academy, where two countries, both alike in dignity, come together; the Black Doggies of the Eastern Nation of Touwa and White Cats of the Principality of West have a longstanding feud. Romio Inuzuka and Juliet Persia, leaders of their respective dorms, seem to be bitter enemies. In reality, however, Romio and Juliet are hopelessly in love, but revealing their relationship would call upon the ire of all their comrades. They hide their love to maintain peace, but a clandestine relationship means they miss out on many of the activities couples get to do. As they grow closer together, Romio and Juliet must come to terms with the fact that keeping their relationship a secret may prove to be impossible.

After Keita Suminoe's mother passed away, his father promptly remarried, introducing two step-sisters into Keita's life: twins Ako and Riko. But since their fateful first encounter, a surge of incestuous love for their younger brother overcame the girls, beginning a lifelong feud for his heart. Now at the end of his middle school career, Keita studies fervently to be able to attend Ako and Riko's high school. While doing so however, he must resolve his conflicting feelings for his siblings and either reject or succumb to his sisters' intimate advances. Fortunately—or perhaps unfortunately for Keita—his sisters aren't the only women lusting after him, and there's no telling when the allure of temptation will get the better of the boy as well.

A ghost was seen on the 12th floor of the Asakusa Juunikai building. A newspaper article featuring the sighting brought together Takuboku Ishikawa, who runs a private detective agency to support his family, and his assistant Kyosuke Kindaichi to solve the case. (Source: MAL News)