The marble lacquer finish is more delicate than a standard gloss saya, so a few precautions go a long way. Store the sword horizontally on a display stand in a climate-controlled room, avoiding direct sunlight, which can fade the lacquer over time. Wipe the scabbard periodically with a soft, dry microfiber cloth to remove dust and fingerprint oils. Never use chemical cleaners or furniture polish, as solvents can dissolve the layered lacquer that creates the marble effect. For the blade itself, apply a thin coat of choji oil or mineral oil every few weeks to prevent surface oxidation, and always handle the blade with clean hands or cotton gloves to avoid transferring moisture and salts onto the steel.
