Recommendations

Bong soon, the FL is also a bodyguard for the ML. Her real powers and identity is kept hidden.
Premise of the shows are similar.

Both dramas have teachers that are determined to be a positive force in their students' lives despite the fact that everyone else has given up on them. The students in this drama are also delinquents not expected to graduate or make anything of themselves after high school.

Both dramas have teachers that are determined to change the lives of their students and defy a corrupt system.

Both feature schools notorious for their delinquent students fighting to rise to the top. These teens are also tied to a large crime organization.

The FL from TJFH is a demon similar to the ML from my demon and both revolves aroundgetting rid of the bad

Tokyo Revengers also features teens getting involved with mob groups and it has similar themes of friendship and overcoming hardships together.

the male leads are both a single father, the female leads are both Han Ji Min and both male leads have a calm and soft character

Both dramas start with male lead and female lead being a married couple in an unhappy marriage. The story will show the way around them and the watchers will unfold more to the storyline

it is connected to their storyline because the male lead in the first frost is brothers with the female lead in hidden love and also the male lead has a similar story to the female lead in the first frost

-Thai Bls
-Historically centered plots

-Thai Bl
-Reincarnation
-Both have historical plots/aspects
-Female lead trying to get between the two

Overall, the two dramas have similar vibes/atmosphere as well as plots.

If you like The First Frost vibe (slow and deep) then you have to watch The Forbidden Flower. Also similar to have some kinda trauma and etc. (YOU HAVE TO WATCH IT)

Famous BL actors acted in a Non-BL drama.

Also both the dramas are of comedy genre with sufficient emotional story

Both are fun to watch

Famous BL actors acted in a Non-BL drama.

Also both the dramas are of horror comedy genre

Both are very hilarious

Very suspenseful but with a lot of comedic areas and portrayals of romance. But, the main thing is that they are both after something and to uncover something. These two dramas show the gradual journey to the succession of this mission.