Establishes a general exploit on the Seraphim — move the model, move the weapon — and deepens the bloodline-elements science from physiology toward inherited selfhood, feeding the Devil-Fruit / cloning lore. A clean chekhov-explicit + prop-tell stack: York’s lab question (@1065) is answered by an in-combat behavioral tell (@1090) just 25 chapters later. Cross-link Seraphim, Bloodline Elements, Seraphim Are Lunarian-Bodied Warlord-Modeled Vegapunk Weapons.