Who Will Teach Me How to Escape from the World in the Apocalypse?

After death from overwork, I can travel back into the novel I once read. Well, that's acceptable. The background of the book is the end of the world... Well, I don't really want to... It's a super supporting role, very good... Hostess: Xiaoyou, have you forgotten me? Am I your high school classmate? Male protagonist: Since we are Xin Hua's friends, let's follow him together! Is it too late to die now?