Ship/Member: Any (the obvious choice is Jeonghan, equally intrigued by the non-obvious choices)
Major Tags: N/A
Additional Tags: Character study, idolverse?, political intrigue?, actual doctors au?
Do Not Wants: None

Prompt:

Whatever, in the course of my practice, I may see or hear (even when not invited), whatever I may happen to obtain knowledge of, if it be not proper to repeat it, I will keep sacred and secret within my own breast.

The Hippocratic Oath (translation source)

Donkey: What's the point of being able to talk if you gotta keep secrets?

Shrek (2001)

And when you have it, what then?

Some secrets are safer kept hidden. Some secrets are too dangerous to share, even with those you love and trust.

George R.R. Martin, A Game of Thrones