Sunohara Hinata thought defeating the evil overlord and returning to high school in Japan marked the end of his otherworldly adventures. But when Mariabell, his first and most fervent ally from the magical realm, follows him home, his daily life takes a fantastical turn. Just a month after his return, Mariabell, a dark elf with a passionate and slightly obsessive love, declares they`re meant to be together forever. Now, Hinata must navigate the halls of high school while living with a magically jealous girlfriend who takes "school crush" to a whole new level.

Note: The first episode received an early screening at a special event on 16 March 2025 at LOFT/PLUS ONE in Tokyo. The regular TV broadcast started on 7 April 2025.