Introduction to The Pinnacle of Humanity:
As the Dragon Slayer Sword cleaved into the skull of Isley, the Abyssal One of the North, the muscles in Guts's right arm tore apart in a spiral. The Berserker Armor howled against his skin. This man, who had no yoma energy, relied solely on the contraction speed of his tendons to swing a three-hundred-kilogram sword with five times the speed of sound. "Calculation error." A trembling Organization observer recorded: "Experiment S-001, the human-shaped calamity, has physically surpassed the speed limit in its assault on an Abyssal One, at the cost of seventeen fractures."
The moment the tentacles of Riful, the Abyssal One of the West, pierced Guts's heart, steam hissed from the Berserker Armor's faceplate. He tore an Awakened Being's main nerve with his teeth, forcibly stitched the wound in his heart with his abdominal muscles, and charged on.
When the fangs of Luciela, the Abyssal One of the South, shattered by a blow from his sword hilt, lodged in his collarbone, this human had already lost 2,800 milliliters of blood. Still, he wedged a broken bone into the armor's joint and completed the beheading.
"Life signs: no yoma energy detected, no sign of rapid regeneration. Purely carbon-based life-form." The Organization's final report curled in the torchlight: "We recommend redefining this 'human' as an Abyss-level threat."
