I opened a clinic in the Abyss World

In the most chaotic and disorderly abyss of the continent of Aesop, there runs a strange clinic.
The boss is known as the disgrace of Calva Medical School! A corrupt potion master! A despicable medical butcher!
However, there are always long queues outside the clinic.
The mermaid wants to replace her tail with legs, the goblin wants a new skin, the elves are lining up for psychological counseling, and the giant can only squat in front of the square waiting for a house call...