Artist. Formerly tagged as [[t.yokota]].

Current main nickname: おるがん (Olgan, an abbreviation for "oldgamma", his old name)
The other nicknames: oldgamma, がんま (Gamma), 横田 高佳 or ヨコタタカヨシ (Yokota Takayoshi)
Circle name: KOM
Site name: Apochromat (アポクロマート)

h4.See also

* Home page: http://apochromat.sakura.ne.jp/
* Blog: http://b.dlsite.net/RG12552/
* Tinami account: http://www.tinami.com/creator/profile/19172
* Nijie account: http://nijie.info/members.php?id=999
* Twitter account: http://twitter.com/oldgamma
* Twitpic account: http://twitpic.com/photos/oldgamma
* Digital distribution site: "DLSite.com":http://www.dlsite.com/maniax/circle/profile/=/maker_id/RG12552.html 
* Circle,ms: https://c10000360.circle.ms/
* Pixiv account (deleted): http://www.pixiv.net/member.php?id=45169

olgan (t yokota)