Hiroo was born in Hokkaido, Japan's northern island that is renowned as a region of good music venues and lots of talented artists. Growing up there, he became deeply subsumed with a local community of music-lovers where Hardcore, Rap, Free Jazz, Folk & Blues collide with each other and explode. That early time affected him and his appreciation of music deeply.

In 2009 he moved to Bangkok, Thailand and started his own party: GIANT SWING. It is now one of Bangkok’s longest-running underground parties, and has gone on to become responsible for establishing an enduring link between Japanese underground artists and Southeast Asia. Hiroo has also played at Bangkok's most influential Dubstep / Bass Music party: DUBWAY SESSIONS.

In 2012, he returned to Hokkaido and began a new party called HALATION. He frequently gets out and plays in big cities like Tokyo, Sapporo, Bangkok and Ho Chi Minh.