You can get rid of fatigue in the body, but fatigue of the mind is something else.
Leave it to me and I will remove the fatigue of your soul before you know it.
This is a function NPC.
This screen indicates that you may be having one of the following three problems:
1. The function tab has not been added properly.
2. The NPC has changed to a regular NPC due to the changes in the April 2nd NPC data plan.
3. The function is not ready yet.