Artist, illustrator, eromangaka.
This artist said "This is my second pixiv account for NSFW art. If you find my main account by chance, please leave it alone."
Japanese name: 山田◯◯ (“Yamada**”: the "**" part may vary)
https://www.pixiv.net/users/1769484
https://www.pixiv.net/stacc/gotyui2
https://twitter.com/YMD_NO_SEI
https://twitter.com/Yamada_seikatu2
https://twitter.com/intent/user?user_id=1518214918096715777
https://twitter.com/intent/user?user_id=1656232054215028736
https://fantia.jp/fanclubs/24591
https://seiga.nicovideo.jp/user/illust/3288277
https://www.nicovideo.jp/user/3288277
https://pawoo.net/@gotyui
https://pawoo.net/web/accounts/144357
https://yamada.fanbox.cc
https://www.pixiv.net/fanbox/creator/1769484
https://sketch.pixiv.net/@gotyui2
https://misskey.io/@Yamada_Seikatu
https://www.pixiv.net/users/170597
https://www.pixiv.net/stacc/gotyui
https://twitter.com/YMDnoSKD1
https://twitter.com/Yamada_Seikatu
https://twitter.com/yamadanoseikatu
https://twitter.com/intent/user?user_id=80859150
https://twitter.com/intent/user?user_id=90867147
https://nijie.info/members.php?id=145100
