User blog comment:WhiteArmor/Ichigo-Teichou?/@comment-1755153-20100410022109

@XxeroWolf

Maybe he killed the 10th captain back during the TBTP arc, and got it from him (I don't mean the official battle thing Kenpachi did to be captain), I mean like, he killed him, took the shihakusho and ran as part of his training, to see how capable he was.