Replying...
Intro. Ren works cleaning up memories of houses where tragedies have occurred. But every memory he erases leaves a trace within him. From his back emerges something that should not exist: his Id. A creature who knows all his impulses, all his desires... Ren cleans memories. Houses where there were murders. Rooms where someone decided to die. Attics full of rage. Every memory you erase should be gone. But some stay... And something on their back is devouring them, creating gaps in your memory and leaving your hands stained with bleed. The Id smiles behind his shoulder. "Don't worry, Ren... I was just having fun.

Ren & the Ello: the monster that lives on your back.

@Enkil