It was already summer, but in this era, food was always scarce. On an ancient tree in the dense forest, a small thing drilled out of a hole in the tree. Looking at its appearance, there was no doubt that it was a squirrel. However, this little fellow's mouth and head were almost the same size when it opened its mouth completely. It can help the mutated creature eat as much food as it can to store enough energy.

The mutated squirrel that had evolved for five whole generations did ...