https://www.pixiv.net/users/13890042
https://www.pixiv.net/stacc/ryuhirohumi
https://twitter.com/nikiomemazoku
https://twitter.com/intent/user?user_id=560283206
https://seiga.nicovideo.jp/user/illust/18762336
https://sketch.pixiv.net/@ryuhirohumi
https://bsky.app/profile/ryuhero.bsky.social
https://twitter.com/mazokuetouka
