It gets you with the mug. You pour the cocoa, you say the words, and instead of a graceful little wish-granting fairy you get Mirmo: a runaway prince with a chocolate problem and zero interest in doing his job. That gag would wear thin in twelve episodes, so the show spends 78 turning it into something else entirely, because the real engine here is Kaede being completely unable to say one honest sentence to Setsu while a tiny freeloader eats her sweets and offers terrible advice. Rirumu chasing Mirmo down and refusing to let the engagement go gives the muglox side its own romantic mess, so the fairies aren't just tools for the human plot, they're stuck in the same paralysis. The magic never actually solves anything, which is the point. Nobody hands Kaede her feelings. She has to walk up and say it herself, one stalled attempt at a time.

Eighth grader Kaede is upbeat and lively, but painfully shy around boys. On her way home from school she wanders into a mysterious shop and buys a colorful cocoa mug. At home she finds instructions etched inside, and while following them she says she wants to go out with Yuuki, the most popular boy in her class. A small blue fairy named Mirumo then materializes. Mirumo, a love fairy known as a muglox, turns out to care more about chocolate and making trouble than about helping her. He is actually the prince of the muglox world, and he ran away to avoid marrying his intended bride, Princess Rirumu. Rirumu, the bounty hunter Yashichi and a huge crowd of other muglox, some kind, some wicked and some just odd, soon come after him, turning school life upside down for Kaede and her friends. The series mixes comedy, romance, fantasy and magical girl adventure.