Daiki (ダイキ) is an enemy and an antagonist in Shin Nekketsu Kōha: Kunio-tachi no Banka. When Kunio was in prison, Daiki took over as the guardian of his school and stole his uniform. He also revealed to have destroyed Riki's school, Hanazono High. He later tells Kunio that he's a wanted man in prison an tries to take him back to jail. After he's defeated, Kunio and Riki receive their uniforms back.