How Do I Start Moon Bathed Deep?

It is obtained by talking to Tsuyuko, who is located North of the Mouun Shrine, Watatsumi Island. "The Moon-Bathed Deep" is also the name of the pool under the Sangonomiya Shrine that serves as the entrance to Enkanomiya. The pool is unlocked by the world quest The Still Water's Flow.

How do I start the moon-bathed deep quest?

To start this quest, you will need to talk to Tsuyuko first. You can find her in Mouun Shrine in Watatsumi island.

How do I get to the moon-bathed deep cave?

To complete this one, players will need to first activate the Mysterious Pillar and then rotate the statues. After finishing off the enemies, players can finally move to the center of the area and collect the Key of the Deep. This key will grant access to Enkanomiya and open up the next Genshin Impact update.