Hiroki joined Dentsu as a web designer/programmer in 2002. On the strength of his weird skill of animation and program, he has worked with Honda, Shiseido, KDDI and One Club, and some public services. He specializes in directing from the standpoint of engineer, and sometimes finishes by himself.

Hiroki is good at banner ad, so especially in online-ad categories, He has won many awards, including Gold and Silver Lions at Cannes, Gold pencils at the One Show, Gold and Silver at AdFest , Grand Prize at London International Awards , Silver at Clio and New York ADC. In 2007, He received silver medal on Cannes Cyber Young Creative Competition.

He has been jury of D&AD, and London International Awards.