Doujin circle consisting of "Tachibana_(valkyrie)":http://www.pixiv.net/member.php?id=71824 and his circle partner(s). Best known for several [[hong_meiling|Meiling]] x [[izayoi_sakuya|Sakuya]] [[yuri]] doujins.

* Circle name: PrimaryStage (プライマリーステージ)
** (Joint) pen-name as a mangaka: 風良 まり (Fuura Mari)
** Pixiv name: ふらまり (Furamari)
** Temporary pixiv names: 広報の人 (Kouhou no Hito) or 中の人 (Naka no Hito)
** Pixiv account: http://www.pixiv.net/member.php?id=2263265
** Twitter account: http://twitter.com/Mari_Fura_Mari

* Tachibana_(valkyrie)'s solo accounts:
** Japanese names: たちばな (Tachibana) or 橘俊
** Pixiv account: http://www.pixiv.net/member.php?id=71824
** Twitter account: http://twitter.com/f86tachibana
** Twitpic account: http://twitpic.com/photos/f86tachibana
** The Interviews account: http://theinterviews.jp/f86tachibana/

primary stage