After the fairies defeated Gunala, the Evil Goddess, another crisis hit the Fairy Castle!! The magical energy of the world has been devoured by the evil wizards. The Rainbow Flower, the source of the magic power, is soon to wither, and this will destroy the world of Fairy Castle. Only finding the legendary Rainbow Heart Stone and letting it recollect all the essential energy can save the world. To solve this biggest crisis in the history of the Fairy Castle, Prince YouLe, Sally, and their new friend XiaoQian, have to go back to the human world and reunite with Maggie and Michelle to fight the evil again. (Source: Mahou Shoujo Wikia, edited)

Sasami's always been kind of neat... but now she's been imbibed with a healthy dose of magic (which she plans to use to right the things wrong with the Earth, and, of course, help keep her brother Tenchi out of trouble). Naturally, there's going to be trouble: this time, it's the mysterious Pixy Misa... and Ryoko going at it against Ayeka (as usual) isn't making things any easier for her! (Source: AnimeNfo)

This anime adapts Key's visual novel Kud Wafter, which follows the romantic relationship between Riki Naoe and Kudryavka Noumi from the game Little Busters!

Episodes 4-6 of the Soukyuu no Fafner: Dead Aggressor - The Beyond series.