Accidentally reborn as a Siberian tiger cub, Yang Deyi is bound to a self-discipline skill system, and he can upgrade his proficiency by drinking milk, crawling, and even climbing trees! Although he was born thin, he became insanely strong with his extreme self-discipline. Not only was he the first to open his eyes, but he also unlocked the attack skill "Claw Swing". Facing the "genius monster" Tiger Brother who eats an astonishing amount and is twice as big as himself, as well as the deadly crisis in the jungle, Yang Deyi forced the lazy and cancerous Tiger Brother to exercise while relying on the system to constantly unlock new skills. Under the protection of the tiger mother and the pressure of the crisis, this tiger cub with its own system is running step by step from a weak cub to the king of dominating the forest!
