Extra stuffs are in Fanbox and Patreon
差分はFanboxやPatreonに

Patreon: https://www.patreon.com/deras
Fanbox: https://deras.fanbox.cc/
Twitter: https://twitter/deras_bgt
Request/リクエスト: https://www.pixiv.net/en/users/925407/request
Commisssion/コミッション: https://deras.carrd.co