"Time to help the Player and what's the whole procedures."
Yumiko Fujiwara, better known as Wisteria, is a retired racer. Yet Yumiko Fujiwara gains experience on how to do things in the lab, thanks to her boyfriend Shiro Maizono, and she is the first person to be hired by him to his hideout. She is now Player's Assistant after team building.
Yumiko Fujiwara is a cheerful and hardworking woman who decides to take part on Maizono's Hideout as she successfully caught someone speeding off the way, yet Wisteria risked her life getting one, the Chief gave her a Medal of Honor. The only one who managed to heal her life-threatening injury was Shiro Maizono, by the power of healing.