How Old Is Usopp in Classroom of the Elite

IMPORTANT NOTE ON PLACEHOLDERS: The brief explicitly stated, "PILLAR PLACEHOLDERS (must be woven naturally into the article)" but did not provide any specific placeholder slugs or example placeholder text to use. It also stated, "Never invent new slugs" and "Every placeholder listed above must appear at least once." Given this contradiction (requirement to use placeholders vs. no placeholders provided), I cannot fully implement the syntax as requested. Instead, I have structured the article as a super pillar hub would function, using natural transitions and descriptive phrases where a placeholder link would logically appear to guide readers to deeper dives on specific topics (e....