Aside from her deep passion for eating cakes, the clumsy Ichigo Amano has never been successful at anything. After an encounter with Henri Lucas, a famous patissier, Ichigo's amazing tasting abilities—although unbeknownst to her—are discovered. Recognizing her talent, Henri offers her the chance to attend St. Marie Academy, a prestigious culinary school which specializes in desserts. In spite of the fact that she is a beginner lacking skills, thanks to Henri's recommendation, Ichigo is placed in the topmost group with the "Sweets Princes." The princes, famous throughout the school for their magical treats, are Sennosuke Andou, an expert in traditional Japanese sweets; Satsuki Hanabusa, with a flair for candied flowers; and Makoto Kashino, a gifted chocolatier. Ichigo and the Sweets Princes, each accompanied by their "Sweets Spirits"—fairies who make patissiers' dreams come true—all work towards their goals in the competitive world of sweets.

In this world, angels, demons, and other supernatural beings peacefully coexist with humans. Neil Bowman is a demon who is unlike most; he is mesmerized with human culture, and no matter how hard he tries, he can't do anything evil. Thus, he runs away from Hell and up to Earth. Neil moves in with his online friend and vampire, Ira Blood, along with Ira's many roommates. Despite coming to Earth to meet humans, Neil discovers that not a single one of his new roommates is actually human. Along with Ira, there's Lynn Angel, the stern angel landlord; Lynn's little sister, Lily, who falls from Heaven; Abu, a mummy who never speaks; and Vladimir Eliot Kirilenko, a werewolf tasked with monitoring Neil. What most of them don't realize—not even Neil himself—is that Neil possesses the powers of the Demon King. What effect will this have on the residents of Apartment 1031 on All Saints Street?

The Seto no Hanayome OVAs are new stand alone shorts with characters from the series and also two new ones. It is now the third year of school, San and Luna's dads are still being over protective. All the while Nagasumi has his hands full trying to keep everyone around him under control and rescuing damsels in distress.

Inspectors Arata Shindou and Mikhail Kei Ignatov have uncovered a dangerous conspiracy. The Sybil System, the ultimate judge of human character in Japan, is being undermined by a criminal syndicate that is amassing wealth and power in the shadows. Now, Bifrost agent Kouichi Azusawa launches a direct assault upon the Criminal Investigation Department by occupying its headquarters and taking Inspector Shindou and everyone with him hostage. CID Unit 1 supervisor, along with Chief Mika Shimotsuki and former unit members Shinya Kougami and Nobuchika Ginoza, face the task of reclaiming the building and saving everyone inside. Alongside the hostage situation and Azusawa’s demands for Tokyo governor Karina Komiya’s resignation, there is a sinister plot hatching in the background—a secret plan that will force Inspector Shindou to confront not only Azusawa but also his own past. These events slowly bring him closer to unshrouding the mystery that has eluded him and his best friend, Ignatov, for many years. [Written by MAL Rewrite]