The village of Ootsuka—home to Shino Inuzuka, Sousuke Inukawa, and Hamaji—was lit on fire under the preconception that a virus had seen all of its life eradicated. Now surrounded by flames and on the verge of death, the three were approached by a strange man holding a sword. He tells them that they must reach a decision if they want to live. That night changed everything for these children. Five years later, the family of three now lives under the watchful eye of the small Imperial Church in a nearby village. All is fine and dandy until the Church attempts to reclaim the demonic sword of Murasame. To accomplish this, they kidnap Hamaji to lure Shino, now a bearer of Murasame's soul, and Sousuke, who possesses the ability to transform into a dog. The brothers must put their differences aside to rescue their beloved sister from the Church in the Imperial Capital, signalling the beginning of a very difficult journey.

Mitsunari Tokugawa, the organizer of the historic Tokugawa underground fighting ring, has created a tournament featuring 38 of the world's best fighters, many of whom are grandmasters in their respective form of martial arts. With the exception of weapons, anything goes in Tokugawa's ring so that each fighter is able to showcase their true power and strongest secret moves. Baki Hanma earned a place in the tournament due to his status as the reigning champion of Tokugawa's fighting ring. Will he be able to come out on top? [Written by MAL Rewrite]

Ever since he was born, Baki Hanma has always known nothing but fighting—strengthening every single muscle and learning different techniques from various martial arts under the supervision of his mother, Emi Akezawa. He trains in order to prepare himself to face and eventually surpass his own father, Yuujirou Hanma, a man feared by the masses as the "Ogre" and deemed the strongest being in the world. However, when Baki realizes his mother's techniques are no longer enough, he sets out to become stronger in his own way. Seeking out powerful opponents and forming unbreakable bonds with them, he continues to grow both body and his soul, as the clock continues to tick closer toward the inevitable showdown against his father... [Written by MAL Rewrite]

OVAs bundled with the 17th, 19th, and 23rd tankoubon volumes of the Golden Kamuy manga.