Recommendations

Both are about prodigies in surgery & an outstanding doctors.
The main character is also impudent if thats what it takes for a sake of the patients.

Both male protagonist have a cool demeanour, is fighting for something (a goal to reach). Both dramas have cool "agent" scenes and a female protagonist that fall in love with the male protagonist.

Both movies are about families that have to deal with the aftermath of a brutal crime that has been done to their daughters.
Both fathers show the extent of what they are willing to do for their daughter.
Both are brutal, tear jerking movies.

Both movies have the same actress for the female Lead, both deal about a romance story where one of the pair has to deal with a disability/condition.
Always is more dramatic than The Beauty Inside.

Both have male leads that belong to a different time period and in love with someone from their own time periods. In both, male lead is taken care of by modern day female lead, who was either reincarnated or similar to someone that male lead knew about in his time.

both deal with ghosts, both have a similar atmosphere, both have a fun humor

Same cute friends to lovers trope... guy secretly in love with her girl friend / childhood friend/ bestfriend

Same cute friends to lovers trope... guy secretly in love with her girl friend / childhood friend/ bestfriend

Both male leads are writers who are fond of releasing consistent dark novels. Well, there's a story behind, but its story is interesting as characters' real personalities keep on developing. This is beyond a romcom drama! ^^

There's also a connection between Go Kyung Pyo and D.O. characters and the male leads that only them could experience.

yep, idk it's the same thing... I am not good at this so I will stop

Female lead gets pregnant and brings up the child with her fathers knowledge, but very strong female lead and flower boy oh Dennis!!!

Different country but the storyline is actually quite similar! Both leads are rich (hot) heirs but have 'something' that happen to them and their families try to search for them. Both dramas have an ajusshi who wants to prevent the leads from meeting their families. Both dramas have the lead guy fall in love with a country-side girl early in the series. Both series have the leading girl help the lead guy adjust to the new environments. Both dramas have super cute romance/ comedy scenes.

While the storylines are very different, I felt that the two male leads (Seo In Guk, in Shopping King Louis, and Choi Woo Shik, in Ho Goo's Love) were both innocent and lovable in their own ways.

Both female protagonists develop supernatural powers that help them solve mysteries.

This is the first movie and it's a must-watch! The beautiful love story and how it started!