This one gets you with the apology. Mui collapses on campus in a uniform nobody recognizes, says sorry before she explains anything, and that one accidental touch drafts Takeshi and Kurumi out of their fake-couple normal life and into a magic war they never asked for. Madhouse keeps it clean and restrained, no beach episode bailout, no harem shuffle, just a kendo kid learning that his own brother stands on the other side of the line. The problem is the rhythm: whole episodes idle at the academy, then the plot sprints through developments that deserved three times the runtime, and the finale walks off mid-sentence with almost nothing settled. Fans stay because the premise is genuinely good and the tone never winks at you. You will finish episode 12 staring at the credits, waiting for a second season that never came.
Takeshi Nanase thinks he knows his life: high school, a fake dating arrangement with his childhood friend Kurumi, and nothing particularly remarkable. That certainty shatters when Mui Aiba collapses on campus in an unfamiliar uniform. She's a magician, and in her panic, she's accidentally transformed Takeshi into one too. What he believed was a single reality fractures into two. Humans walk through their ordinary world unaware that magicians operate in secret alongside them, wielding power and fighting battles invisible to normal eyes. Now dragged into this hidden conflict, Takeshi has to grapple with newfound abilities he didn't ask for while caught between both worlds. Mui becomes his reluctant guide, but joining the magical society isn't simple or safe. People want to use him. Others want him dead. Takeshi must figure out what kind of magician he wants to become and where his loyalties lie, all while the conspiracy surrounding his transformation deepens. His dark past might hold answers he never wanted to find.