Bee Train

Bee Train Production (ビィートレイン株式会社 Biītorein Kabushikigaisha), commonly referred to simply as Bee Train, is a Japanese animation studio founded by Kōichi Mashimo in 1997. Since their involvement with Noir, .hack//Sign, and Madlax (among other series) they have a strong following in the yuri fandom for being involved in series portraying strong female leads with speculatively ambiguous relationships.

Animated:

Phantom: Requiem for the PhantomTsubasa Chronicle.hack//SignTsubasa Chronicle 2nd SeasonNoirShinrei Tantei Yakumo.hack//RootsMedabots.hack//Tasogare no Udewa DensetsuEl Cazador de la BrujaMurder PrincessMadlaxAvengerHyouge Mono.hack//Liminality.hack//Intermezzo.hack//Unison.hack//GiftBatman: Gotham KnightGinyuu Mokushiroku Meine Liebe.hack//G.U. ReturnerSpider Riders: Oracle no Yuusha-tachiWild Arms: Twilight VenomArc the LadGinyuu Mokushiroku Meine Liebe Wieder

Produced:

Blade of the ImmortalHalo LegendsPopolocrois MonogatariIGPX: Immortal Grand Prix (2005) 2nd SeasonPhantom: Requiem for the Phantom Picture Drama.hack//Tasogare no Udewa Densetsu: Offline de AimashouIGPX: Immortal Grand PrixSabaku no Kaizoku! Captain KuppaSpider Riders: Yomigaeru Taiyou