Master operates Studio UNZ, dedicating himself to guiding young individuals who feel lost or directionless. He welcomes friendships with anyone passionate about music, reflecting his supportive role in the musical community. He is uncle to Mashima Himeko and shares close bonds with Maple Arisugawa and Yudas Jinbabu.

In *Show By Rock!! Mashumairesh!!*, he appears in a secondary capacity. His role continues into *Show By Rock!! Stars!!* as a minor character. Concrete details about his specific narrative contributions, actions, or character evolution within these series are unspecified.

Information regarding his background story, character development in other official media such as movies, OVAs, or spin-offs, or any additional relationships or activities beyond the cited material is unavailable.