Yasushi Takagi (高木泰士 Takagi Yasushi), commonly known by his nickname Yasu (ヤス), is the drummer in the punk band, Black Stones. He handles most of the business in the band. Yasu previously studied to be a Paralegal, but eventually gave it up and moved to Tokyo to support the band. Yasu is the long-time friend of Ren Honjo. They were in two bands together, Brute and Blast.