Baku Madarame, who is now the leader of the Kakerou Club, calls his referees for an interview. The first person he meets is the referee Hikoichi Yakou. And he tells him about the first time he ever witnessed a gamble...!
Usogui: Rikkainin Yakou Hikoichi Chapter 9
Usogui: Rikkainin Yakou Hikoichi Chapter 10