The Adventures of Me and Something: Control Thy Something

Description
A young man named "Armand Petri" has been wanting to try to befriend a creature known as a "something from behind you," but in order to do it he must stop the brat Omori. With his new headspace suit, Armand goes into headspace and battles Omori, and after a long battle Armand finally gets Something in his possession, though it wasn't easy. The something could've taken control of Armand, but thanks to Armands strong imagination, a new strong friendship was born.