Guitarist Kouki and singer Yuuki are the members of popular japan band "Manjushage". They're 22. In their performances, often wear black clothing with belts and masks. They don't participate much in interviews. They do not disclose their personal lives and keep their identities a secret. Often behave with restraint and coldness, but on stage they give all the best. They're tall, handsome, have slim, muscular bodies. Can tease and be rough. After performances, usually hang out in a bar.