Piano Man was the most senior member of the Flags and held responsibility over the group with his leadership. Filled with whimsy, delicacy, and cruelty, he was also said to be the youngest mafioso closest to becoming a Port Mafia executive. However, he sometimes tended to be fickle and fastidious, hence missing his deadlines by months if his crafted supernotes—counterfeit money—failed to meet his standards.

Nevertheless, Piano Man was quite trusted by Mafia boss Ōgai Mori to monitor Chūya