Both MLs are highly placed chaebol heirs sharing the a kidnapping incident at a young age. Both have nightmares about that incident even as adults and have very hard time letting go.The FLs of both dramas were also part of their traumatic childhood experience.

Both of these teaches the concept of frugal living and the perils of living beyond your means and saving money.

Both of these dramas have the male lead while educated is unemployed and relies their mother for money.

Although there are differences with regards to what triggers the time travel in both the dramas the male leads tries to prevent a tragedy from happening and how his efforts leads to a butterfly effect and changes events . In Meet me @1006 romance is important while in ERASED priority is given to prevent the tragedy .

At the beginning of the series both the male leads are cold blooded ruthless business men. Due to a life changing event the personalities of both male leads change for the better drastically from before. If the changed personality is caused by a heart transplant in Falling for Innocence , it is an accident which changes the male lead's personality in the Sawan Saang.

In both dramas the male lead is devastated about the loss /leaving of his significant other. After lot of searching they find out that the lady had told lies about everything including name and was impersonating another person. While 'You are closer than I think' is focused on romance, Untouchable is more into mystery.

I both dramas the female lead goes to a foreign locale to lean cooking and meets the male lead there and spend a night with them and breaks up soon.

The ML and the FL meet after sometime and the ML tries to reconcile.

The FL is poor and ML is rich and the FL has a very supportive SML with them.

Both of them deals with forbidden romance. While in both there is romance between Stepmother and stepson, Likit Kammathep is a typical slap/kiss romance drama.

In the female lead is stuck between two male leads. in each of these dramas. In both dramas , there are alternative endings and the female lead ends up with each male lead based on the version you see. Both are in Chinese , I feel Best Time is the better one.

Both involve plots about sleeping with their friend after drinking. They try to move forward without damaging their friendship in both cases. Kiss the series is about college mates while You drive me crazy is more about adult relationship.

Both have a father having a restaurant and a person coming to their life as a fake son. In both, the father has three daughters and the fake son falls in love with one of them. Both of them have Ryu Hwa Young as one of the daughters. Both are long family dramas.

ML character is similar. Both hav a sick ex-wife or ex-GF whom they get married to when they are in a relationship with the FL.