URLs

• https://www.pixiv.net/users/15480
• https://www.pixiv.net/users/12911835
• https://www.pixiv.net/stacc/kotetu
• https://www.pixiv.net/stacc/niwatori_sidem
• https://x.com/hatori_niwatori
• https://x.com/i/user/23795188
• https://m33kjnyk.fanbox.cc
• https://www.pixiv.net/fanbox/creator/15480
• https://sketch.pixiv.net/@kotetu
• https://sketch.pixiv.net/@niwatori_sidem
• https://www.tinami.com/creator/profile/15578
• https://www.tinami.com/profile/93746
• https://www.youtube.com/@つるさきゆう
• https://www.youtube.com/channel/UCTDHrUNkOQpU131tZjA-KAA
• https://www.mangaupdates.com/author/mjfc09a
• https://www.mangaupdates.com/authors.html?id=16087
• https://ja.wikipedia.org/wiki/津留崎優
• https://anidb.net/creator/63831
• http://file.niwatori.anime-festa.com
• http://niwatori.anime-festa.com
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=158808
• https://www.mobygames.com/person/1204339
• https://myanimelist.net/people/33771
• https://www.tsurusakiworks.com
• https://niwaniwa1211.wixsite.com/works
• http://www.amazon.co.jp/s/field-keywords=津留崎優
• http://c10024579.circle.ms/oc/CircleProfile.aspx
• http://c10046082.circle.ms/oc/CircleProfile.aspx
• http://drawr.net/kotetu
• http://www.pixa.cc/profiles/show/1406
• http://theinterviews.jp/niwaniwa
• http://twitpic.com/photos/hatori_niwatori