"Bloodstained" Yosaku, is a very famous Saiseiya and a no-need-for-rules type of guy. He has a revival institute in the giant tree "Mother Wood", where he carries out all his revivals. The institute is also covered in blood from all his failures from the past. He is acquainted with Ryu, the former boss of the Gourmet Yakuza, and Ichiryu, the President of IGO. In addition, he is a member of the IGO's 0th Biotope.