I don't want to be the little mermaid 5

I was visiting a certain place the next day. A hospital called "The Witch's House". I have a chronic illness, so I am often taken care of here. However, today's business was different from usual. Go to Stasta and the nurse and say "Mermaid Princess". This is the watchword. This watchword allows you to get medicines that cannot normally be prescribed. Meet the witch for that.
After a while, I was guided to the back of the hospital.
"welcome"
A mermaid of a wrinkled old man with a dubious atmosphere. While clasping my tense and trembling hands, I gave a bow and took the seat opposite.
"So what's going on today?"
A witch staring at my face and asking a question. If I don't say it, I decide to take a breath.
"I want a medicine that makes me human."