Reincarnated As The Heroes Guide

After suffering a tragic death while working overtime, Kalli is granted a second chance at life. There is just one small condition. She must guide an Academy full of Chosen Heroes through an apocalypse level invasion of their world and the global awakening of humanity to its true potential. With zero time to prepare, in an unfamiliar city that is actively being torn apart by monsters, she struggles to maintain some semblance of order. But when the danger continues to increase, there is only option left. Get strong or die. discord.gg/aokiaku — Description from novelcodex.org