A panda had once been struck by lightning, gaining a sharp intellect and the power to wield thunder. It escaped the zoo and secretly mastered peerless martial arts. To avoid being captured and dissected by humans, it lived as an invisible drifter. One day, a mutated rabbit that had fled a laboratory witnessed the panda obliterate an agent with a single thunder-infused punch. Though the panda trembled at the thought of the scalpel, the battered little rabbit snarled at its cowardice, shouting that it was better to die on one's feet than live on one's knees. This left the hidden powerful beast to decide whether it would rise from the shadows and unleash its fury upon mankind.
