PC Cocoron is a cancelled platform game that was in development for the PC Engine. It seems that this project was meant to be a sequel of the Cocoron NES game, which is notable for allowing customization of the main character. Not many more info are available about PC Cocoron and it was soon lost in the unreleased games limbo.
Scans from Console Plus issue 28, GameFan issue 1-12, Marukatsu Vol 1 1994 and Marukatsu Vol 2 1994.
Thanks to SuperPlay, Youloute, Rod_wod and Gilgamesh.