Sky-Swallowing Beast Lord

The story of the prehistoric times was rewritten when this man and a dog took their first step in the cold and hunger. Waiting for them are poisonous insects entrenched under rotten leaves, miasma beasts wandering in dry forests, and hidden deep in the mountains and valleys. There is also the unknown mysterious continent, the first ray of light called "opportunity"... Let's see how one person and one dog stand on the top of the continent.