URLs

• https://www.pixiv.net/users/27612
• https://www.pixiv.net/stacc/sg_ice
• https://twitter.com/seriousgraphics
• https://twitter.com/intent/user?user_id=142560537
• https://pawoo.net/@sg_ice
• https://pawoo.net/web/accounts/226381
• https://sketch.pixiv.net/@sg_ice
• https://skeb.jp/@seriousgraphics
• https://xfolio.jp/portfolio/seriousgraphics
• https://xfolio.jp/users/kFv2dy9IPx8C
• http://seriousgraphics.sakura.ne.jp
• https://www5a.biglobe.ne.jp/~c_words/