Also known as: ノー・ガンズ・ライフ, ノーガンズライフ, nogunslife
A manga about Inui Juuzou, a Gun-headed Cyborg P.I./Troubleshooter in a post-war dystopian cyberpunk city.
Or, as one of the very Engrishy taglines puts it, "SF hard-boiled the gunsmoke drifts muzzle talks".