URLs

• https://www.pixiv.net/users/875853
• https://www.pixiv.net/stacc/penguindou
• https://x.com/penguindou4545
• https://x.com/i/user/1393660476
• https://pawoo.net/@penguindou
• https://pawoo.net/web/accounts/328337
• http://www.sepia.dti.ne.jp/penguindou/
• http://www.boreas.dti.ne.jp/~gigamel/
• http://6402.teacup.com/gigamel/bbs