Both web series are set in a guest house on jeju island. Both are rom-coms with cute friendships too.

They're both set is "parallel" worlds. For the majority of both series, they're in societies where females are the overpowered ones and the males are on the lower end. In the romance of tiger and rose, the FL realizes the hypocrisy behind too much female power which essentially just shifts the unfairness from one gender to the other. In the other half of me and you, the ML realizes how misogynistic he's been and realizes how unfair and degrading it can be to be treated like the "lower" gender. Both series are extremely funny, but they still bring to light the the truth behind how our societies work.

Both are about friendships and romance. Each group of friends go on summer vacation, one to the beach and one to Jeju island.

Both show the relationships between an older man and a younger woman. Their relationships aren't simple attraction, but about how the two need each other and give each other the warmth that they both desire. Day and Night is a much more dark and bittersweet movie, while Choki is more on the lighthearted and melo side.

The dreariness of them both are similar and in each, unusual relationships form. Moonless Dawn is much darker though as it deals with mental health and a grim reality where a group of people find solace in each other.

Both have middle schoolers as the leads and there's a slight romance that blooms between them. Rebellious Teenagers is a much darker movie, but their both about how a single person can change you and the small moments from when you're young, can change who you are for the rest of your life.

Better Days is a much better movie, but the two relationships I feel are a little similar. Both "couples" are people in need of each other and they change each other.

Both have ambiguous relationships between the two mains.
Intense school bullying and suicide in the main them of them both.
Cry me a sad river is a much darker story, but both make you feel pain for the characters.

Both are horror comedies with ghosts and other supernatural elements. Goldbuster is funnier than The 9th Precinct though.

Both are dark and realistic stories of high schoolers.
Bittersweet
Heart-wrenching
Intense characters

Both are dark and twisted tales where the males leads are obsessed. The ML's are also younger than the FL.

The plot of the movies aren't that similar, but the mains relationships are both about broken people who need each other. Both movies are beautiful and touching.