Recommendations

There is a price to pay to get the million dollars. Would you trust other? That is the question in this movie.

Both movies about winning big amount of money. Story within story. Will the million dollars bring happiness?

The female Lead is an Alien came from another planet that has fallen in Love with a male on Earth My girlfriend is an alien shares a similar concept to Fish Knows you as both of them are about Aliens from other planet.

My love from the ocean has similar stories exept that in My love from the ocean the female is a mermaid not the male

Although not the same language but similar stories exept the male us richer one in legend of the blue sea and the female is the mermaid

It also has a teacher-student relationship where the teacher is an older woman who helps him with his studies and to gain confidence in himself

Both dramas are about corruption in the school system and the inequality that this creates between students.
However, My Strange Hero is much more romance centered than Solomon's Perjury which only has very minor romance in it, and I mean really minor.

Not really similar apart from the body switch if that's your thing, with the added humour of a gender swap as well. Plus, you know, the great Hyun Bin.

Strong bromance. Can you rely on your friends? There was a big crime needs to be solved. Will your friend there for you? There were some good time and bad time with the friendship

Grow up together. Strong friendship. There was a murder. Who did it. Can your trust your own friend? Could you work with your friend to solve the mystery?

The prosecutor working hard against the evil but was tiresome and went nowhere. Who is the real murderer? Who can he trust?

Could the prosecutor job secure by doing the right things? Could the prosecutor be framed and need gangster help? Could the gangster and the law enforcement work together?

Although the Japanese movie is not gangster, but one main lead make a plot to bring out the evil and seek revenge.

Can the cop or prosecutor work with gagster against the big evil!?what is the master plan? Will the gangster obey the law? Will they get along?

Can the gagster work with the cop to fight the evil? Can the evil abide by the rules of law? Can the cop twist the law to make room for the gagster?