Oshiete Mahou no Pendulum: Rilu Rilu Fairilu

The Fairilus are little magical fairies that depict flowers, insects, and other beings. They all originate from the Fairilu Seed and reside in the weird, effervescent, and enchanting world of Little Fairilu. The Fairilu Key, a unique key given to each Fairilu at birth, may be used to enter magical doors and cast spells. The Fairilu can finally develop into a full-fledged fairy if it finds the perfect entrance. The doors connect to the human world as well. In order to learn about their world and make new friends, Fairilus must study and attend school.