Proper Japanese Title: 蒼黒の餓狼 北斗の拳レイ外伝 (Sōkoku no Garō - Hokuto no Ken: Rei Gaiden)
Also Known As: Fist of the North Star - Rei Side Story: Bloody Wolf's Darkness Blue
Originally serialized in Weekly Comic Bunch.
— Description from Comic Vine community (comicvine.gamespot.com · https://comicvine.gamespot.com/sokoku-no-garo-hokuto-no-ken-rei-gaiden/4050-58956/).
