Check the posters guys it's so similar
- office romance
- ML is obsessed with the FL from the beginning
- rich guy, poor girl
- comedy vibes
- rom-coms

- Law / Prosecutor
- Comedy Scenes
- Romance between lawyers
- In The Law Cafe the female lead resigns from her job, in suspicious partner, the male lead had to resign because of circumstances
- The Law Cafe : The female lead wants to open a cafe
- Suspicious Partner : The male lead quits his job as a prosecutor and becomes a lawyer.

Similarities:
- Their relation changes through story: from enemies to lovers
- Guy is spoiled but he changes and becomes a better person because of the girl
- Girl is kind, helpful and tough, she doesn't give up easly
- School / romance / comedy

- Both are short dramas
- Relationship problems
If you already watched romanced you'll find the similarity. Though the stories are not same but fast paced stories.

- Both dramas revolve around lawyers
- Strong male lead
- Revenge type story
- Solving cases in both dramas

There are a few similarities though if one liked suspicious partner I guess they will like this too.

- Both story revolves around detectives
- Solving cases in both
- In both drama, trying to save someone's life who died
- In signal they can talk through a walkie talkie, but in Train they can travel to the parallel world
- Same vibes
- Catching the killer
- Both ends with a cliff-hanger

Similar storyline
1. Relationship problems
2. Both story happens on a trip
3. Change of feelings of main characters
4. Similar vibes
5. Love triangle

Both stories are about high school student life.
Both stories have a smart male lead.
These two shows are so similar in many ways like - crush, friendship, love, jealousy.

Both stories are about autistic people. These two shows revolve around how autistic people are trying hard to live a normal life in society.