Baruku ate the glowing plants, and that night he experienced pain so intense that he fainted. When he awoke, he found that his body had undergone a change. He now had thick, brawny arms with bulging veins. And it wasn't just his arms; his entire body had grown larger and stronger, as if he had been reborn. He was shoked, but couldn't help but take delight in his newfound abundance of power. With this new strength, he could move beyond stealing from fallen humans, and begin stealing from living, healthy ones as well.
See Baruku, Cave Warrior.