Full-res, aditional versions, step process and PSD files available on:

Patreon > https://patreon.com/posts/61334931 (chise)
https://patreon.com/posts/60053579 (yume)
FANBOX > https://zssh.fanbox.cc/posts/3304005

Gumroad (Old rewards) > https://gumroad.com/zasshu96

Twitter > twitter/z_ARTs96