Recommendations

both female lead help an investigator to solve a crime that involves supernatural abilities.

Both of them are really exciting, every episode is different, but there is main plot somewhere hidden. And even main characters have quite good stories to share :D

Both connects with a Student-Teacher relationship. These movies made me speechless to the point I dont know where am I anymore. It also have similar events that was so dark yet emotional at the same time and it was just executed brilliantly.

similar concept with multiple heart breaking scenes, and both fujitv getsu9 drama..............

Both a extremely well written and directed tvN shows that both aired in 2016. Both focus on cases that seem irrelevant at first but tie up really well by the end. Though I would personally favor Signal for its unique time travel aspect and how it moves on from case to case almost effortlessly, Pied Piper does not disappoint in the least. The thrill both shows give, specially in the latter half is wonderful. If you liked one, you'll love the other.

*) Hwang Jung Min's movie
*) Law & criminal
*) A roller coaster between the bad & the good guy
*) Comedy & action

*) Detective thingy
*) Based on friendship case
*) Same amount of comedy and action

Both female lead works in a funeral services and connected to a dead people.
in RB dead people ask her to help them and solve their death.
but in MP she travels back to time to save the dead people.

Both about the making and debut of an idol band containing men with troubled pasts. Both have big labels trying to stop them.

the same lead actress with cancer in both, one a movie, the other is a drama series, with nice lovelyl stories. In Mama, the kid is a boy, in Wedding dress is a girl. Both child actors are doing great jobs! Both are recommended for beautiful loving family stories.

The characters stories and the plots unravels in a similar way..

Both stories are different but at the same time really similar. Both stories about ruined musicians/producers which found new talents that moved them. Also, both stories are about music, tragedy and love.

The male leads are really similar, both handsome but also mysterious and, at first, really odious with the female leads.

It's so similar: a clever and famous high school detective and a somewhat talented assistant (girl), who have feeling for each other but are shy to confess, solve mysteries

The story is pretty similar. The main character is considered not attractive compared to her sister and because of that her personality is shy and awkward. However, because she shares a name with the popular guy in her class she catches his attention. Because of her quiet demeanor she becomes the target of his bullying but things start to shift when she stands up to him. He still "messes" with her but in ways that create opportunities for her true personality to shine and in doing so they begin to fall for each other.

Main plot point shared is that the male lead doesn't like the female leads personality in the beginning but it soon becomes apparent that he misjudged her and he finds himself drawn to her.