Kingdom Hearts χ (anime)

Kingdom Hearts χ (キングダム ハーツ キー, Kingudamu Hātsu Kī) is an ONA anime by Square Enix that aired on Hulu on April 16, 2018. It is a series of anime original short films with a story focused on Kingdom Hearts χ series, created by Geno studio. The initial release of this anthology series was announced to have eleven episodes. In October 2018, the series was canceled after only one season and the he production was then transferred to a feature version in early 2020s.

Official Description
It is based of the Kingdom Hearts series that are primarily set in the ancient past, during the "age of fairy tales" and canonically take place before Kingdom Hearts Birth By Sleep.

Trivia

 * This will be the third anime collaboration between Square-Enix and Disney, also the second Disney anime series not to be produced by Madhouse.