The Campus Belle System: Spend on Her and Get Cashback!

After graduating from college, Jiang Fan proudly becomes a food delivery rider. On his very first delivery, he gets hit by a car and sent flying, and gains a System. [Congratulations, Host! You have obtained the Campus Belle System. Spend money on campus belles to receive a hundredfold cashback!] After leaving the hospital, Jiang Fan gives a thousand yuan to his childhood friend, who had been looking after him. “Here, this is for all the time you spent taking care of me.” [The System detects that the Host has spent money on a campus belle. One-hundredfold cashback activated!] Jiang Fan stares in shock at the childhood friend he grew up with. System... is there a glitch? How can his childhood friend be a campus belle too?