Recommendations

Lower class FL accidentally ends up in a marriage with the ML (contract vs. switch) but ends up falling in love. Both have lovable bandit characters (FL and her "brother" in HOML, SML in TOD). Both dramas are light and romantic with very happy endings.

Arranged/contract marriage between the FL and the ML who is either a general or the son of a general turns to love. Both are mostly light dramas with a sweet relationship between the main couple.

FL ends up in a forced or contract marriage with the ML who is either a general or the son of a general. The marriage ends up growing into love. Both are light romantic dramas with happy endings.

The OG master/disciple dynamic and this is one of the most famous version with Louis Koo and Carmen Lee.

Master subordinate relationship dynamic between the hero and heroine. They are antagonistic toward each other at first but come to an understanding by the end of the series.

Master/disciple relationship where the master and disciple fall in love but they have a lot of stumbling blocks along the way before they come together.

THE EXACT SAME SITUATION AND MOOD
-female lead has something to do in a famous boysband group's house
-the male lead is always in a bad mood at first, avoiding everyone in the house and then he'll become the cutest boy you've ever seen
-second lead couple
-enemies to lover

FL ends up in another girl's body, married to royal ML who is cold toward her at first. SFL is a jealous concubine scheming to get rid of her. At some point the FL gets banished to the distant palace where the ex-concubines live.

Hana no Arash and Innocent Man have similarities
-Both antihero main lead.
-Poor guy/rich woman trope
-Revenge
-Makjang-ish
-Time skip

They have serial killers and psychopath diary have thriller and mystery also.

The 2 psychopaths in both movie and series are so unique and the story are intense

The FL ends up in a different world from her own and meets the ML who initially tries to kill her but then slowly falls in love with her. Both are mostly light and fun dramas.

The FLs in both have a false/someone else's identity and find themselves married to the ML. The FL dislikes the ML at first and the ML is initially cold and wants to get rid of her but slowly falls in love with her.

The FL is in a different time or body. The main couple dislikes each other at first and the FL is more interested in another guy/other men. Both have similar vibes and tone.

Both are light dramas with the FL having a fake/someone else's identity. Both MLs are cold and threatening toward the FL at first but gradually fall in love with her.

The FL is in a different place or body. The ML dislikes her/wants to harm her at first but gradually falls for her. Both are mostly light and fluffy dramas with a similar feel.