Bitou Hideyuki is the younger brother of Makio and Tatsuya. He and Bitou Tatsuya were using Machida Katsutoshi to start a war on Suzuran to avenge their brother Makio Bitou, but in fact they were also looking to surpass him.
He was the one that set a trap to get rid of Makoto Sugihara. After a talk with Rindaman, Bitou Tatsuya was convinced to fight with Harumichi Bouya on a one-on-one, and Hideyuki would settle things with Mako too .
- Hideyuki, Matsuda, several underlings vs. Mako - Won 
- Hideyuki vs. Kirishima Hiromi - Won 
- Hideyuki vs. Mako - Loss 
- Hideyuki vs. King Joe - Loss 
- Hideyuki vs. Fukumaru Kazumasa - Won, four times