Rilu Rilu Fairilu: Yousei no Door is a tV series anime that premiered in winter 2016, produced by Studio DEEN.

About the production: the story comes from an original script, there are 59 episodes of about 24 minutes and its current status is "finished".

Its main genres are fantasy and slice of life, with themes such as Kids, Magic, Female Protagonist and Iyashikei.

On AniList, Rilu Rilu Fairilu: Yousei no Door has an average score of 64%, an average score, and appears on 1,543 users' lists.

The franchise continues in or follows from: Rilu Rilu Fairilu: Mahou no Kagami.

A collaborated multimedia character project between Sega Toys and Sanrio that will include a TV anime, merchandise, books, a game, and events. In the franchise's story, "Fairilu" are fairies of flowers, insects, mermaids, or other entities that are born from "Farilu Seeds." Each Fairilu is born with their own key, and they must search to find and open the door that fits only their key. Once the Fairilu pass through the doors, they mature. The doors are also related to the human world. (Source: Anime News Network)

Official synopsis from AniList.