Yousei Teikoku is a four-member Japanese musical unit, formed in 1997 and part of TEAM FAIRITHM. Their music contains elements of electro, EBM, darkwave, neoclassical, ethereal and ambient mixed with gothic rock/metal. They have released several independent albums and four major release albums with their current publisher Lantis: Gothic Lolita Propaganda, metanoia, Gothic Lolita Doctrine and Gothic Lolita Agitator.

The members are:
· Yousei Yui - vocals, chorus, and lyric writing.
· Tachibana Takaha - keyboards, guitar, composition, arrangement and lyric writing. Has worked with Kukui in the past.
· Nanami - bass guitar.
· Relu - drums.
Prior to the release of Baptize, Yui and Tachibana were the group's only members. Nanami and Relu have since been added.

Yousei Teikoku literally means Fairy Empire. Through music, Yousei Teikoku is attempting to revive the Fairy Empire that exists between the human world and the spiritual realm known as Spiritual. The purpose of their music is "to make humans remember the pure heart inside them that believes in fairies, forgotten before we knew it". "Gothic" and "empire" are key words in their musical ideas.

(Source: Wikipedia)