Artist name KA-9 reading is given as ないん, nine.
https://www.pixiv.net/users/93170
https://www.pixiv.net/stacc/raiden01
https://twitter.com/KA_009
https://twitter.com/intent/user?user_id=175620016
https://ka-009.booth.pm
https://fantia.jp/fad4d7d828
https://fantia.jp/fanclubs/502863
https://pawoo.net/@raiden01
https://ka-009.fanbox.cc
https://www.pixiv.net/fanbox/creator/93170
https://sketch.pixiv.net/@raiden01
https://skeb.jp/@KA_009
https://misskey.io/@ka009
https://misskey.io/users/9rq9cph2egdr06sv
https://www.dlsite.com/maniax/circle/profile/=/maker_id/RG67623.html
https://bsky.app/profile/ka09.bsky.social
https://bsky.app/profile/did:plc:5sb36frjeewcqbsgymwv2ung
https://www.dmm.co.jp/dc/doujin/-/list/=/article=maker/id=207721/
https://lit.link/KAnine009
https://pawoo.net/web/accounts/185889
http://twitpic.com/photos/KA_009
