URLs

• https://www.pixiv.net/users/3185014
• https://www.pixiv.net/stacc/sippuu-koubou
• https://twitter.com/sippuu_koubou
• https://twitter.com/intent/user?user_id=4876126165
• https://sketch.pixiv.net/@sippuu-koubou
• http://www4.kcn.ne.jp/~mayu-34/