Fang and Bone

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Features and Overview
The Fang and Bone is a shop run by Kilton which specializes in monster-related wares. It can be found on the "left eye" of Skull Lake in Deep Akkala during night. After Link talks to Kilton for the first time, his shop will appear near every major settlement in Hyrule (except for Goron City) from 9:00 PM to 5:00 AM. The exact locations of the Fang and Bone are as follows: underneath the bridge to Tarrey Town in Lake Akkala in the Akkala Highlands, west of the Ancient Furnace in Hateno Village in East Necluda, on Korne Beach in East Necluda, among some ruins west of Gerudo Town in the West Barrens in the Gerudo Desert, south of the Hebra Trailhead Lodge in the Hebra Mountains, southeast of the Veiled Falls in the Lanayru Great Spring, and above Lantern Lake in West Necluda.

Fang and Bone uses Mon as currency, which can be obtained by exchanging monster parts with Kilton. Each time Link frees a Divine Beast, more wares show up in the shop. After defeating Calamity Ganon, Link can also receive a Medal of Honor at the shop for defeating each of the overworld bosses.

Trivia

 * Fang and Bone will not disappear immediately once the time reaches 5:00AM if Link waits. However, if Link talks to Kilton after this point, the latter will realise the time and the shop will vanish in a cutscene.
 * The sign above the shop window reads "Savage Swaps" in BotW:.