Baki Hanma: Son of Ogre

Baki Hanma: Son of Ogre takes place after Baki's intense battles with powerful foes. He seeks out Biscuit Oliva, also known as Mr. Unchained, for sparring, and to achieve this, he gets himself imprisoned in the Black Pentagon, a maximum-security facility housing the most violent inmates. The Black Pentagon is also home to several formidable fighters who pose a significant challenge to Baki. By entering this environment, Baki sets the stage for a confrontation that will ultimately prepare him for his battle with his father, Yujiro Hanma.