Kazuhiko Yamamoto owns the shop that specializes in Nissan Skylines. Reina's White GT-R (BNR 32) was tuned there. Yamamoto drives a Nissan Skyline GT-R V-Spec II (BNR 34). Beginning with Maximum Tune 3DX, he drives a 2007 Subaru Impreza WRX STI hatchback. The shop was originally named Yamamoto Speed, but was renamed to YM Speed, it was named that when Reina first came to have her car tuned, the shop reverted to its original name at a later time for undisclosed reasons.