Classmates Are All Bosses Season 1

[Single female protagonist + unlimited flow + reference + no nonsense + no swords + few words] Millions of years ago, without warning, demons, disasters, weirdos, and beasts suddenly descended like a tide in an unexpected manner. Only by killing them can we find a glimmer of hope in this crisis-ridden world. Survival has become the most difficult but extremely determined goal. Such plots only exist in those absurd novels and fantasies, but now it has really happened to Zhang Yichen himself.