URLs

• https://www.pixiv.net/users/2283289
• https://www.pixiv.net/stacc/yukihakka
• https://twitter.com/yuki_hakka
• https://twitter.com/intent/user?user_id=2725737722
• https://sketch.pixiv.net/@yukihakka
• http://yukihakka.blog.fc2.com
• http://www.geocities.co.jp/AnimeComic-Pen/7496/