Torakichi, a young boy aspiring to become a swordsman, unexpectedly secures an apprenticeship with Jinbei Tsukishima of the City Patrol after demonstrating fierce determination to master the blade. Impressed by Torakichi's resolve, Jinbei takes him under his wing and initiates his swordsmanship training. Torakichi's parents are acknowledged in his character context, though their specific roles and interactions remain undefined.