AlfatogodeQFBere:

4. Under the queen's umbrella.

N proffesors appear as per even the ministers are educating the crown princes to be.

This one is 5th

Not just Crown Prince but tutors for other princes as well, btw

6. Sungkyunkwan Scandal

7. The Emperor: Owner of the mask

This guy makes a professor once retired from the Palace

8. Dong Yi - there's a character teaching FL's son

9. The Great King Sejong - There are several but the one that comes immediately to my mind is the traitor who teaches Sejong Chinese language and also the girl attendant that substitutes the backstabber.

10 if accepted.  Ja Myung Go.

Cha Cha Song teaches Pu Ku all the tricks and acrobacies for working and teasing people in villages squares spectacles.

@AlfatogodeQFBere, choose the next topic as the 10th poster please

Let’s move on and keep this going?

10 dramas/movies in which one or more main characters do NOT have perfect teeth (please include a picture)

(or you noticed the teeth because something was conspicuous)

3.Oshi ga Joshi ni Narimashite

5. Meteor Garden (2018)