The music studio owner and uncle of band member Mashima Himeko fosters the group’s development by providing rehearsal space and urging them toward experiences like street performances. Balancing familial support with subtle insistence, he gently pressures Himeko to engage with the band despite her initial reluctance to collaborate. His playful nature surfaces in pranks, such as faking an injury with hot sauce masquerading as blood, sparking a brief, comedic panic. Nostalgic anecdotes about the band’s origins underscore his enduring mentorship. He supplies practical guidance, distributing concert tickets to motivate the group and mediating occasional tensions with rival band DOKONJOFINGER, all while observing their progress and rivalries with quiet investment.