Arlong Tattoo Sun Mark
Status: pending (textbook visual-foreshadow) · Technique: background-symbol · costume-detail · name-etymology-via-symbol
The seed
Arlong’s Ch. 69 page 13 debut includes a costume detail that lands ~552 chapters early: a sun-rayed bandanna (yellow rays radiating from the forehead-center) and the same sun motif on shoulder and chest tattoos.
This is the Sun Pirates emblem — the symbol Fisher Tiger’s crew used to brand-over the Hoof of the Soaring Dragon slave-mark of the Celestial Dragons (revealed Ch. 621, Fish-Man Island arc).
Arlong’s Ch. 69 sun-bandanna and sun-tattoos are the first visual planting of the Sun Pirates emblem in the series. The symbol is on-page; its meaning is fully-deferred until the Fish-Man Island arc.
This is a textbook visual-foreshadow by Oda — the etymology-via-symbol technique. A reader at Ch. 69 sees a decorative sun-pattern; a reader at Ch. 621+ recognizes it as a resistance-emblem with slave-history. The same image, two completely different meanings.
Technique class: background-symbol + costume-detail + prop-tell (the bandanna is a recurring visual prop) + name-etymology-via-symbol (the Sun in Sun Pirates is the visual-only etymology of the brand — never spelled out, only shown).