Hiriluk articulates the narrative-physics of the entire One Piece series in a single line. Every Straw-Hat power-up across the saga is keyed to a powerful emotion triggering a change in the body:
Luffy’s Gears — each Gear-state is invented in extremis under emotional stress.
Zoro’s nothing happened at Thriller Bark — pure emotion-driven physical absorption.
Sanji’s Diable Jambe — emotional-fire as literal heat.
Chopper’s Monster Point — direct extension of the giant-form Hiriluk witnessed in Ch. 142, emotionally-triggered.
Hiriluk’s doctrine is the in-universe theoretical framework for the series’ entire power-system grammar. Pre-loads the Gear-and-Awakening forward-canon.