They both have something to do with the protagonists future in a way. Both have a high school setting they give me a similar feel

Both dramas have the female lead going into a world of the dramas they're working on. One is an actress the other is the screen writer. In both the dramas the main couple have a lot of misunderstanding but end up falling for each other anyway.

In both dramas the FL goes in to a diffrent universe.
In unique lady it's a game while The romance od Tiger Rose it's a drama. both the female leads have a similar personality and in both they have a lot of guys in love with them

Zhao Lu Si plays the main female lead in both.
In both dramas she travels through time to the past in a way. She's a little more clueless in Love better than immorality in my opinion but she still makes it work.

Has the same actors acting as a couple in both the main female lead gets a makeover the only difference is SDG is a litter on the darker side of a good Romantic comedy

Both the girls get major make overs. Both of the main guys realize how much they care about the female lead after said make over. Side note in both movies the main actors are dating in real life so they have amazing chemistry