When it comes to racing kneelers, it`s said the deeper the relationship between the driver and passenger, the faster the team. Among parent-child teams, husband-wife teams, boyfriend-girlfriend teams, and brother-sister teams, many are fast. Motegi Girls High School`s driver Maria Shishido and passenger Yuria Shishido are a twin team who operate as one. So identical even their parents can`t tell them apart, they`re skilled racers who control their bike with their impeccable combination. However, there`s something bothering them.