Wahoojin Jeans Fashion Show Evidenced by the latest fashion show, Wahoojin denim is making inroads into the denim mainstream with funky denim fashion. Wahoojin is a Japanese company that was established in the year 2005. The concept of Wahoojin is to create high quality, yet fun and fashionable denim by using historical Kimono hand paintings (Yu-Zen). Wahoojin wishes to inspire all.