Yeah, thats what I was referring to. Absolutely incredible, and pretty much the best reason you can give why Sonic games have been sub-par and now utterly shitty after Sonic 3 & Knuckles.
Without Ohshima, Naka couldn't do a new NiGHTS because they lacked his creative flair, and without Yasuhara their level designs in 3d Sonics absolutely stank while Naughty Dog surged on with him making so top quality 3d platformers. Always irks me to this day when Naka gets credited as "Creator of Sonic the Hedgehog", when he really, really wasn't.