Yuenchi – Baki Gaiden Manga

the story follows a dark place inside the world of the baki series, the so-called “amusement park”. the main character is mumon katsuragi, older brother of katsumi. he ventures into a dark place where money is everything and lives are cheap, the “amusement park”, motivated to find the killer of his mentor and master taizan matsumoto. the killer left a few trails behind and with his wits and physical prowess, he's been able to track him down to the ultimate dangerous fighting arena.