What Is Love By Hadaway Fist of The North Star Edition

A global nuclear war has turned most of Earth into a contaminated wasteland, with humanity's survivors now fighting over the few uncontaminated food and water supplies still remaining. Kenshiro, a master of the deadly martial art Hokuto Shinken, is traveling with his fiancee Yuria when they are confronted by a gang led by Ken's former friend Shin, a master of the rival Nanto Seiken style. Shin proclaims that he has been in love with Yuria for a long time and challenges Ken over her, with no law interrupting in the matter.

After defeating Ken in combat, Shin engraves seven wounds on Ken's chest and leaves him for dead, taking Yuria with him. Ken's eldest brother-in-training Raoh, having witnessed the fight without intervening, returns to his dojo, where he finds his sensei Ryuken meditating. Raoh challenges Ryuken's decision to choose Ken as the Hokuto Shinken successor over him and kills him, proclaiming he will become the ruler of the new world. A year passes and Ken now wanders the wasteland as a hero who protects the weak and innocent from those who prey on them. He rescues a couple of young children named Bat and Lin from a gang of bandits and allies himself with another Nanto Seiken master named Rei, who is searching for his kidnapped sister Airi.