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All Japan Weight Category Champions - IKO 1 All Japan Weight Category Champions - IKO 2 All Japan Weight Category Championships - IKO 1 All Japan Weight Category Championships - IKO 2
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Please note that since 1995 both IKO 1 and IKO 2 have organised their own World Tournament, All Japan Championship and All Japan Weight Category Championship. The results of the unified tournaments prior to this are included in both sections. All Japan Weight Category Champions - IKO 1 All Japan Weight Category Champions - IKO 2 All Japan Weight Category Championships - IKO 1 All Japan Weight Category Championships - IKO 2
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