When Nanase Takeshi, a regular high school student, encounters Aiba Miu, a girl from a world of destruction, he winds up getting involved in a grand battle between mages. In order to save Miu, in order to save the world, and in order to change destiny. A real, modern-day magical action story begins now.
Kinjirō Sakamachi has gynophobia (fear of women), due to his violent mother and sister. Subaru Konoe is the butler of his classmate, Kanade Suzutsuki, and has to dress as a male due to butlers having to be men. When Kinjirō discovers Subaru's secret, Kanade promises to cure Kinjirō of his phobia. Kinjirō and Subaru are forced due to circumstances to spend time together and defend Subaru's secret while trying to cure Kinjirō's fear.
As a child, Raku Ichijo made a secret promise with his childhood sweetheart, keeping a pendant as a memento while his love took the key. He dreams of one day meeting his past love, but years later, reality smashes his hopes when Chitoge Kirisaki accidentally knees him in the face. Though Raku's a normal high schooler, his family heads the notorious yakuza gang the Shuei-Gumi faction. And he's dragged into family affairs when he's forced into a relationship with Chitoge, the daughter of a rival gang's boss.