After the events of the last quest in the series Genshin impact and glowing shells.
See article for full guide. "All Ghosts on Tsurumi: Where to Find, How to Start and Complete Quests".
Where to find the ghost of Shitoka in Genshin Impact
Sitoki will not just appear. To find the ghost, you need to find the first glowing shell. One lies in a cave, a little north of the teleport at Sirikoro Peak:
Pick up a shell. A ghost will appear who will tell about his brother and his treasure, the map to which is lost. The traveler must help the vision collect four seashells and connect the pieces of the found circuit together.
Glowing Shells on Tsurumi: Genshin Impact Map
Collect shells for the ghost.
They are easy to spot as the objects glow a little. If you collect the wrong shell, you may end up with fish, seaweed, crab, or sea fungus.
After finding all the shells, find Shitoki again. It floats near the statue of the Archon on Tsurumi. The ghost will thank you and give you a map that will point to the center of Mount Kanna:
Awards
Come to the place indicated on the map in the center of Mount Kanna. For helping the ghost, the player will receive a precious chest.