Biography
Gyakkyou Burai Kaiji is not an artist. Gyakkyou Burai Kaiji is the name of a 2007 anime that everyone on 4chan's /a/ enjoys. When this soundtrack was first put up on 4chan's /a/, it was ripped by a very lazy tripfag named "Moonlander" who did not even bother to look for a correct album artist. However, no one on seems to care.
OST tracks are by Taniuchi Hideki (タニウチヒデキ)
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OP is by Kaiji with Redbourn Cherries
ED is by Hakuryuu (jp : 白竜)
FIX YOUR TAGS PEOPLE!
Biography text from Last.fm, available under CC BY-SA.