Ushiro (lost build of cancelled PlayStation Portable role-playing horror game; 2008)
From The Lost Media Wiki
Ushiro was a planned horror-RPG game developed by Level 5, first announced and shown at the 2008 Tokyo Game Show. It was about Reiichiro Ushiro, a shinigami spirit with the power to give a person one single wish in exchange for their lives. There were rumors in 2014 that Level 5 was considering actually finishing the game, but ultimately, it was adapted into a novel series titled Ushiro: Ukigen na Shinigami.
Gameplay
In terms of gameplay, Reiichiro would have been able to control and possess people, seeing the lives of strangers, and battling the personifications of the evils in people's hearts.