Grimms Notes

is a Japanese online free-to-play RPG created by Square Enix. It was released in Japan on January 21, 2016 for Android and iOS devices and was released worldwide on March 2, 2018 in South Korea, China, North America and Europe by Flero Games, a Korean publisher. An anime adaptation by Brain's Base premiered on January 10, 2019; while licensed in North America by Sentai Filmworks and Crunchyroll.

Plot
The game takes place in a world created by beings known as "Story Tellers." At birth, all inhabitants of this world are bestowed with a "book of fate" where all their lives are written in advance. However, rogue Story Tellers known as Chaos Tellers are writing bad events into people's books without them knowing. It is up to the holders of blank books of fate to seek out the Chaos Tellers and restore the world.