Recommendations

Both have characters who can read minds/hear thoughts.
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The ML in TDA wouldn’t take advantage of the female lead, but in behavior they seem alike especially the drama with OW. Both are equally as gripping doe.

The plot of the two films are very different but the atmosphere of these movies are very similar, very reminiscent of the old Japanese and Korean movies I used to watch during my teenage days. Be With You itself is a Korean adaptation of a Japanese drama, that's why I recommended the film instead the drama series. Anyway, both are family-oriented dramas with swoon-worthy teenage romance.

Everyday's policemen work, catching the bad guys, interesting dynamics (good friends in TGD1&2, estranged father-and-son in BB), not a lot of interfering romance (if any).

Police teamwork to catch criminals (including serial killers), good bromance, interesting characters.

Both main characters kill villains mercilessly, but the witch is science-fiction based and a more structured plot.

Both are sageuk by the same writers. Shin Se Kyung is in both dramas too.
For Arthdal fans, you might want to check 6 flying dragons for Shin Se kyung acting . 6 flying dragons was a great drama that won many awards.

Now that season 2 is confirmed with new actors, I'm sure fans of the replacements will watch season 2 for them. it is absolutely necessary you watch season 1 because it is quite a complicated world and the worldbuilding is in season 1. I also hope for some appreciation for the efforts of the season 1 cast (I'm saying this seeing how most people underestimated Arthdal season 1 drama when it was airing).
Now, if you notice the drama, it is presented in many titles. If you wonder why is that, the season 1 of the drama is divided into three parts. But all three parts comprised of season 1. This particular part here is part 2.
I also recommend season 2 for season 1 fans. Please watch the drama even with the cast change.

Now that season 2 is confirmed with new actors, I'm sure fans of the replacements will watch season 2 for them. it is absolutely necessary you watch season 1 because it is quite a complicated world and the worldbuilding is in season 1. I also hope for some appreciation for the efforts of the season 1 cast (I'm saying this seeing how most people underestimated Arthdal season 1 drama when it was airing).
Now, if you notice the drama, it is presented in many titles. If you wonder why is that, the season 1 of the drama is divided into three parts. But all three parts comprised of season 1. This particular part here is part 1.
I also recommend season 2 for season 1 fans. Please watch the drama even with the cast change.

I wouldn’t say it’s the same plot or characters or somethin’ like that just that both main leads begin with online dating… it’s cute one is dating through game while the other one is just the casual online dating… love it ???

- North-South Korean relationship in both drama
- 3 NK spies in both drama
- sad ending in both drama
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- sad ending in both drama
- betrayal and politics in the background
- the main lead is a student
- Park Sungwoong in both drama

- both drama set in the 1980s South Korea
- Park Sungwoong is starring in both drama
- both drama is black comedy

Both short films are based on true life stories. Whereas both productions have its own dramatic topic they unite in exploring slice of life themes.

In both Fake Princess and Alchemy of Souls, both the FLs work for High ranking families( in Fake Princess, for Crown Prince in Alchemy for Royal family Mages)
Similarities:-
1. Female leads are replacements to the original characters
2. Both come from a village backdrop/ country
3. Both possess fighting skills( In Fake Princess FL being a Mountain Bandit & in Alchemy FL being a Trained Assasin)
4. FLs are smarter than MLs
5.Both FLs have birth secrets
6.Both involve the FLs hiding their secret identity

Differences:-
1.Alchemy is more about magical, mystical elements (like WUXIA) while Fake Princess is a light hearted Rom-Com
2. AoS has a second ML( major SLS alert) unlike Fake Princess
3. In Fake princess, ML fights his brother for the throne unlike AoS