妖精帝國 (Yousei Teikoku, alternatively Yōsei Teikoku and sometimes Das Feenreich, literally Fairy Empire) are a five member Japanese band. Part of Team Fairithm, the band previously consisted of just vocalist and lyricist Yui with guitarist and composer Takaha Tachibana. The band has since included bass player Nanami, drummer Gight, and lead guitarist Shiren to their line up.
The group have been active since 1996 and have done their rounds around the doujinshi/indies music circuit. Their earliest releases are very hard to find. They did however, gain exposure from 2005 onwards with the release of their album Stigma and have since gained popularity through the use of their music in various media.
Yousei Teikoku's sound is very German, gothic and industrial. Yousei Teikoku merges heavy guitars and fantastical story telling. Yui's voice is not the typical growling associated with metal/hard rock, she carries an ethereal and siren-like quality as she flits gracefully through Tachibana's compositions. Their music combines elements of electronic, ambient, heavy rock, neoclassical, gothic, industrial and anison.
When she's not being Fairy Yui and claiming to be 4325 years old, Yousei Yui (Yui Itsuki in the real world) is a voice actor and a massive nerd. She has three computers - one of which she built, coded her personal website and Yousei Teikoku's website and voraciously on top of technology and massive video game player.
The other members of Yousei Teikoku have nominated Yui to be the frontwoman of the band so that they can get on with their job of composing music. Plus even from the group's early days, Takaha Tachibana was always secretive that during lives, he would intentionally play from the back of the stage rather than stand beside Yui. Team Fairithm, the production group behind Yousei Teikoku have always been veiled in secrecy - however there is no doubt that Takaha and Yui are part of the team and take a hands on role with their music.
They released several independent albums before signing with their current publisher Lantis circa 2006. With Lantis they have released 5 full albums and 15 singles, as well as several anime/video game theme songs and soundtracks.
Vocal: Yui (ゆい)
Keyboard/Guitar: Takaha Tachibana (橘尭葉)
Lead Guitar: Shiren (紫煉) - Joined Jan 12, 2013
Bass: Nanami - Joined 2010
Drums: Gight - Joined Jan 12, 2013
Drums: Relu (2010 - Jan 12, 2013)