You already know how this ends. That's the point. The show builds toward tragedy you've seen before, and it makes you watch anyway, knowing exactly what each girl is about to lose. The soundtrack doesn't let you look away. By the time the transformation sequences hit in episode five, you're not watching a prequel, you're watching a countdown, and every smile hurts because you know what comes after.
Three elementary school girls receive an extraordinary calling: they must become heroes and protect Shinju-sama, the divine tree shielding Shikoku from the hostile Vertex. In a world where only this single region remains habitable, Sumi Washio and her friends Sonoko Nogi and Gin Minowa answer the call without hesitation, ready to fight for their home and everyone they love. What begins as a straightforward mission of heroic duty quickly reveals itself to be something far more complicated and painful. Each battle extracts a price that grows heavier with every victory, forcing the girls to confront the true cost of their sacrifice. Beneath the bright magical girl aesthetic lies a story about childhood lost too soon, about responsibilities no child should bear, and about the crushing weight of duty that transforms innocence into something harder and darker. This prequel explores how heroes are made, not through triumphant battles, but through quiet, devastating personal losses. It's for viewers who want their magical girl narratives stripped of fantasy comfort, grounded in genuine emotional consequence.