Hiragi Utena is a major fangirl of the magical girls protecting her city and leaps at the chance to join their ranks. But once she transforms, she learns she's a villain who enjoys being a magical-girl-tormenting sadist instead!

Jun is childhood friends with two twin girls with different personalities. He ends up in a love triangle with Rumi, who looks boyish but is an otome (maiden) on the inside, and her twin sister Naori, who is a cute otaku.