Artist's commentary
ゼロの秘宝
FANBOX:
https://www.pixiv.net/fanbox/creator/31191343
Patreon:
https://www.patreon.com/r3dfive
Twitter:
https://www.twitter/R3dFiVe_artist
Merch (t-shirts, stickers, etc)
https://www.redbubble.com/people/R3dFiVe
Newgrounds
https://r3dfive.newgrounds.com/