Deemo

Deemo is a rhythm video game developed by Taiwanese game developer Rayark. The game was released on iOS and Android mobile platforms on November 13, 2013.

An enhanced port for the PlayStation Vita, titled  Deemo: Last Recital (DEEMO～ラスト・リサイタル～),  was released in June 2015. A Nintendo Switch port was released worldwide in September 2017. A remake of the entire game in 3D, titled  Deemo -REBORN-, was announced in October 2017 for PlayStation 4 with PlayStation VR compatibility and was released on November 21, 2019. A PC port was released on September 4, 2020, and a mobile port for Android and iOS was announced on November 23, 2020.

A theatrical anime film based on the game titled was produced by Production I.G and Signal.MD and premiered in February 25, 2022.

Deemo: Memorial Keys
The titular Deemo is a mysterious character that plays the piano in a castle. One day, amnesiac girl Alice (Ayana Taketatsu) comes falling from the sky, which starts the story of the two of them, the castle inhabitants, and a tree that grows with the sound of the piano.