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|Genres||Gothic metal, dark wave|
Yōsei Teikoku (妖精帝國?, lit. "Fairy Empire"; German: Das Feenreich) is a five-member Japanese musical unit, formed in 1997 and part of Team Fairithm. Their music mixes elements of gothic rock, heavy metal, electronic and classical music. Their works include the opening tracks of the following anime series: Future Diary, Magical Pokan, Innocent Venus, Kurokami: The Animation, The Qwaser of Stigmata, Mai-HiME videogame, and the Tokyo ESP soundtrack. They have released several independent albums and four major release albums with their current publisher Lantis: Gothic Lolita Propaganda, metanoia, Gothic Lolita Doctrine , Gothic Lolita Agitator, Pax Vesania and Shadow Corps(e).
- Yui Itsuki (伊月ゆい born October 25?) - vocals, chorus, and lyric writing.
- Takaha Tachibana (橘 尭葉 Tachibana Takaha?, born March 25) - rhythm guitar, keyboards, composition, arrangement and lyric writing. Has worked with Kukui in the past.
- Nanami (名波 Nanami?, born ?) - bass guitar.
- Shiren (紫煉） Shiren?, born march 10) - lead guitar.
- Gight (ガイト Gaito?, born march 20) - drums.
- Relu (? Relu?, born ?, family name ?) - drums.
Prior to the release of Baptize, Yui and Tachibana were the group's only members. Nanami and Relu have since been added. Later, Shiren and Gight.
- Atarashii Momo (新しい桃?, New Peach) (1996)
- Momo no Hane (桃の羽?, Peach Wings) (1997)
- Momo no Mori (桃の森?, Peach Forest) (1998)
- Shikō no Momo (至高の桃?, Supreme Peach) (1999)
- Stigma (2005)
- Gothic Lolita Propaganda (2007)
- Metanoia (2007)
- Irodori no Nai Sekai (彩の無い世界?, A World Without Color) (2009)
- Gothic Lolita Doctrine (2009)
- Gothic Lolita Agitator (2010)
- Pax Vesania (2013)
- Hades: The Other World (2014)
- "Shadow Corps(e)" (August 5 2015)
- Ashita wo Yurushite (明日を許して?, "Forgive Tomorrow") (2006)
- Senketsu no Chikai (鮮血の誓い?, "The Blood Oath") (2006)
- "Noble Roar" (2006)
- "Valkyrja" (2006)
- Shijun no Zankoku (至純の残酷?, "The Purest Cruelty") (2007)
- "Schwarzer Sarg" (2008)
- "Hades: The Bloody Rage" (2008)
- "Weiß Flügel" (2008)
- Gekkō no Chigiri (月光の契り?, "The Moonlight Pledge") (2009)
- "One" (2009)
- Tasogare no Getsuka (誰そ彼の月華?) (2009)
- "Baptize" (2010)
- "Rebellion Anthem" (2010)
- "Asgard" (2010)
- "Mischievous of Alice" (2011)
- Kūsō Mesologie (空想メソロギヰ?, "Fantasy Mesology") (2011)
- "Filament" (2012)
- Shito Kakusei (使徒覚醒?) (2014)
- Kyūsei Argyros (救世Άργυρóϛ?) (2014)
- Promotional CD (2004)
- given out at only one of their live shows. Includes short, alternately arranged versions of Garden, Last moment, Torikago (トリカゴ), Haru he (春へ), Gekka Kyōsō (月下狂想), Deep sea and Moonlight magic.
- My-HiME game soundtrack
- Ending songs for the PC game Tsui no Yataka
- Opening songs for PC game Fortissimo EXA Asgard, Kuraki Sekai no Doukoku and Shinteki Souzou
- Animelo Summer Live 2009 day 2 - songs Tamakui (Ga-Rei Zero IN), last Moment (Mai-Otome Game IN)
- The Guided Fate Paradox game soundtrack
- Dai Rokkai Koushiki Shikiten Tour PAX VESANIA LIVE TOUR (2013)
- Tokuten Shiki Shikiten 920 Putsch (2010)
- Animelo Summer Live 2009 -RE:BRIDGE-
- Yōsei Teikoku official website, Fairithm -Gothic Lolita Propaganda- (Japanese)
- Yousei Teikoku official page on facebook