This Streamer Is No Ordinary Woman: She Has a Cashback System

[Younger man + System + Multiple Worlds] A strong heroine and a male lead who starts off weak but grows stronger later. A cool, elegant, wealthy streamer VS a reserved celebrity in public and clingy in private A super-strong zombie king VS a delicate, frail college boy After fulfilling her lifelong regret, Li Yue became a full-time employee of the Space-Time Administration. Carrying a cashback System that returns a hundred times what she spends, she travels to various small worlds to complete missions. Her host had been a virtuous person for ten lifetimes, yet had never received a good reward. Now Li Yue has arrived. She will rewrite her host's tragic fate, fulfill her final wishes, and live another life on her behalf. Li Yue: Everyone thinks I'm a fool who'll pay for anything, but really, I'm making money while lying back and relaxing. But there's something strange about this younger guy. Why is he in every world?!