MAH is the vocalist of the Japanese rock band SiM (Silence iz Mine) and is known for his distinctive, aggressive vocal delivery that blends punk, metal, reggae, and hardcore influences. As a frontman, he brings explosive stage presence and genre-blending creativity, helping shape SiM into one of Japan's most recognized alternative heavy-music acts. His charismatic, rebellious performance style and bold artistic identity have made him a major figure in Japan's rock and festival scenes.

MAH collaborated with ONE OK ROCK on the song Skyfall, contributing guest vocals and participating in lyrics and composition alongside Masato Hayakawa and Kenta Koie. This collaboration showcased his powerful vocal edge within a multi-frontman heavy track. He also performed live with ONE OK ROCK during their Tokyo Dome shows on April 4 and 5, 2018, where Skyfall became a standout moment thanks to the combined energy of all guest vocalists.