Joji was born in Tokyo, Japan and studied Fine Art at Goldsmiths College, London. In 2000 he was nominated for a Beck's Futures Student Video Prize. He has since directed an award-winning short film Watermelon Love (2004), widely screened at international festivals.

Joji is also known by the alias Woof Wan-Bau when directing music videos, including FourTet My Angel Rocks Back & Forth, winner of Public Choice Best Music Video at the 2004 British Animation Awards. Recent directing credits for music promos have included The Duke Spirit track, Cuts Across The Land, his surreal video for Scottish band Mogwai and Coldcut’s Whistle And A Prayer.