Ah! the End of the World Is Coming, but I Only Have a Bag of Toys

Introduction———— The end of the world is coming, zombies are everywhere, and the weather is extreme. Female college student Shen Yu accidentally got a toy exchange system, and the system actually treated her like a child? As a frail and scumbag, Shen Yu had no choice but to hug her roommates' thighs tightly, act as a tool obediently, and start walking on the zombie road. By the way, can [mood perfume, shrinking lights, train play ropes, etc.] Really be used to fight zombies? (The male protagonist is a school boy, and the female protagonist is an alumnus. They are both clean and 1v1, supporting each other in the end of the world. There is a process of mental growth.)