I'll Kill You (stylized as I'LL KILL YOU) is X JAPAN's (then named X) first indie single. It was released on June, 1985 under the indie label, Dada Records and sold out its limited run of only 1,000 copies. The B-Side of the single is "Break the Darkness". The cover art for the EP notoriously contained photos of dead bodies taken from the Vietnam War.
Dada Record is an indie label owned by Atsushi's (X bassis at that time) friend. The label was later closed short after the "I'LL KILL YOU" EP was released, making X the first and only band ever signed to the label.