The female lead donates liver and it was all a sham by male lead to get the liver donation. Both male lead took advantage of female lead and used them for their own benefit disregarding the feelings of female lead.

Both have high school settings.
Both have bullying that is solved in a kick as way.
Both have strong father daughter relationship.
Both have a female lead who is the baddest kick ass girl you have ever seen.

Strong female lead whom is also a general.
Awesome side kicks
The oh so beautiful male lead.
I guarantee that if you enjoyed Oh My General
You will literally fall for My Lady General

They both have similar stories that have connections to the past and future with issues and deaths that need to to be resolved. The time travel is done with the original body in both dramas. They both have symbolism and connections to butterflies and the same feel to it. The same people that were in the past are also encountered with the same faces on both dramas in the future. There is also the theme of longing for someone so much that it trascends time and space. Both take place in Joseon and New Joseon and Both are also based on webtoons.

This has the Vampire storyline that everyone needed to be satisfied with what hapened to Gwi.

This drama has the execution that SWWTN lacked.