[Apocalypse] May We Find Joy Together

Everyone else can seal themselves inside their cave-dwellings to weather this calamity, but the poor guy has no choice but to enter the mortal world and look for his older brother. Before ascending, his master ordered him to cultivate properly with his brother so they could meet again in the upper realm. But... why is this map so hard to read? When will I finally make it to City B~~~~~ (Hurry up and throw away that world map you're holding~~)

This story focuses on the bottom.