Kanabun is the boss of the Kanabun Gang. Him and his gang watched Tsukados fight and loss against Katazu who killed his distant relative Shikazo. After seeing his hidden swordsmans skills after the fight Kanabun brings Katazu the next day to Tsukado so him and his gang can profit off their fight. When Katazu reveals that he didnt kill Shikazo and the fight ends Kanabun and his gang try to get them fight again by force but are chased out of town by the two swordsmen Team 7 and Mr. Ostrich with Kanabun saying theyll be sorry. source: Narutopedia