Am I the Savior of a Post-Apocalyptic Manga?

[World]: You have to help me and save the world! Yun Zixi: Why? [World]: I have handed over everything, including my body and mind, to you. Are you not prepared to take responsibility? Ha~ scumbag! Yun Zixi:? ? ? Yun Zixi accidentally traveled to the comic book world, and what caught her eyes was Saint Hui... The protagonist of the standard light novel starts off, then reaches the peak of the daily world, and then meets true love in the blink of an eye. However, the magic power rises, and the world merges and collapses. Survival in the apocalypse? Extremely cold night? A strange person comes to the world? The devil invades... Hmm... Let me save the world? Real or fake? As a newcomer, Yun Zixi thought about making a difference, and then... Wait... There's something wrong with this zombie. Tearing human bodies alive and smashing desks to pieces, is this or that a zombie? By the way, this has just begun, is it so difficult to survive in the apocalypse? … The introduction is weak, please read the text.