Fan Casting Tsutomu Senkawa in Dimensional Collide

A teenager trying to get through life, Tsutomu Senkawa's life was changed when he was mortally wounded by alien police officer Birdy Cephon Altera and the both of them were forced to merge together to save his life, as well as balancing Birdy's investigations with Tsutomu's personal life. Things get stranger when they learn the criminal Birdy is after, Christella Revi, is now part of a strange alliance with people who are supposed to be fictional. Stranger still, Birdy and Tsutomu themselves are themselves confronted by three men, who themselves are supposed to be fictional with a weird offer: help take down Revi and her new allies.