Both dramas involve characters in the real world existing in a fictional one/a parallel on. Both take place primarily in a comic book/fictional story universe where the female leads know it is fictional and are trying to change end of the story.

It’s like Taxi Driver with more legal repercussions and less vigilante vengeance. If you know you know. Plus EP1 FL driving has a similar vibe to that of Taxi driver ML (plus their cars are similar)

They are both short dramas with a love triangle of sorts involved. Both have a misunderstanding between the main dating couple but the endings are different as well as the relationship dynamics between the parties involved in the relationship.

Oh they both also involve acting as the major of choice for the students

Both short dramas about love, they have a rich and struggling lead but swapped. They just have a similar vibe to them nothing much

They are both about crime solving but in different time period. They have a somewhat similar ML vibe with all the chaos they bring when they are investigating

Same male lead. Has same vibes just without the time travel that is in signal. Crime-solving in pre tech times

both have a lead with a curse about dying before a certain age (ML in TMS and FL in MITD) with the other trying to save them and they fall in love. the lead with a curse is followed by a spirit trying to kill them. the curse is countered by a char of sorts in both dramas. there is a past connection between then leads.

relationship between idol and fan. fan wants to save idol. both have a fantasy element in them which affects the plot

Similar time travel plots and the leads saving each other in each timeline and romance between the leads

Although the plot lines are very different, one about amnesia the other death, I believe they evoke similar feelings as you go through everything with the ML (and side characters) on their journey of healing and closure.

IMO similar plot (both revenge just different reasons for revenge), with the same ML just on different sides of the court.

Both series have themes of dealing with the dead and romance with a past connection between the leads