Masuda is a skilled musician and trombonist. He has cited his deep connection to music as a key influence in his game design and composition work. While not explicitly shown, it can be inferred he has pursued trombone playing for many years, as he demonstrates a high degree of skill.

Specific details about Masuda's other personal hobbies are limited. He likely enjoys relaxing and recreational activities, though he maintains a relatively private life. He has expressed interest in travel and experiencing new cultures.