Artist's commentary
BRS生
Drawing by MだSたろう
→https://www.pixiv.net/en/users/3316400/artworks
You can find this animation in these links
https://gumroad.com/l/LtzqFj
https://fishsyrup.fanbox.cc/posts/1584829
https://www.patreon.com/posts/pack-1-black-43757652