You can usually find a Luxurious Chest as a reward for solving its respective puzzle or completing a world quest in the game. However, some Luxurious Chest locations are so well hidden that you need to explore every inch of the map methodically, rely on luck, or use a guide to find them...
As for Tatarasuna, there are over 20 here. Since you’re close to theMikage Furnace, the Balethunder effect will be active and you’ll gradually lose HP. Make sure you heal up or tag the nearby Thunder Boughs/Electrograna to nullify the effect. Also, remember that some icons do seem l...