First on-page Strawhat-uses-cosmetic-as-search-beacon technique. The Nanohana market-purchase from Ch. 0157 cashes into a load-bearing reunion-mechanic — Chekhov’s-perfume. Sanji’s hyper-olfactory tell installs him as the chapter-internal reunion-mechanic operational asset.
Pre-loads the forward-canon Sanji-tracks-Nami-by-perfume sub-plot.