Otetsu is a vocaloid producer and utaite. He has earned the title "Legendary Luka Master" in several of his works such as "Graduation" and "Noraneko". "Hoshikuzu Utopia" is his most well known song. He is most well known for his complex rock songs, usually featuring Megurine Luka or GUMI. He channels and deepens their voice, and is very experienced in making them sound more realistic.