URLs

• https://www.pixiv.net/users/495407
• https://www.pixiv.net/stacc/masukumaki
• https://twitter.com/ushiotazawa
• https://twitter.com/intent/user?user_id=519784547
• https://t-ushio.tumblr.com
• https://anidb.net/creator/6058
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=27551
• https://www7.atwiki.jp/anime_wiki/pages/12953.html