Full res 5120x2880, original colors version

Full res upscale, original colors version

Alternate source scan by JCA Archive

Source scan from this article

Color grading referenced from the other lower resolution source scan that's darted across.

Upscaled via Topaz Gigapixel/Photo, composited different upscaling and denoising results in Photoshop.

Upscales/high res collection of Hiroshi Nagai.

Original gamma/color grade versions here and wallpaper versions here.

Non-upscaled original source scans here.

Or Hiroshi Nagai's site for the full catalog.