Synopsis

The chapter opens with the group entering the 'Pseudo Night Sea,' an underground area lit by luminous ores, requiring them to travel on boats. They encounter a gigantic fiend named Teviathan, which they learn is weak to thunder and has eyes on its back as weak points. The boss spawns mobs protected by crystals and the team uses a 'Holy Element' enhancement to quickly defeat them. They strategize using thunder attacks on the boss's weak points, while planning to sell a guide to others on how to best deal with this dungeon.