Hokuto no Ken

Synopsis

Kenshiro travels to Ryuga's castle and forces his way inside, determined to save Toki. Kenshiro finally accepts Ryuga's challenge, but Kenshiro quickly gets the upper hand. After he injures Ryuga, Toki intervenes, telling him that Ryuga had already committed seppuku and re-bandaged himself in preparation to die during the fight. As he lays dying, Ryuga says that he once believed that Ken-Oh was the one to bring order to the post-apocalyptic world, but now he believes that Kenshiro is the one to lead humanity into the future. With his last breath, Ryuga reveals to Kenshiro that he was Yuria's brother. Shortly after, Toki finally succumbs to his radiation sickness and peacefully passes away with Ryuga's body in his arms.

(Source: Wikipedia)