Recommendations

Arang is a supernatural drama featuring ghosts, gods, evil, revenge and redemption. It definitely has a more comedic element than what we see in Black Knight thus far but there is also melo and eventually a beautiful romance. If you are a fan of supernatural dramas, I have found Arang to be one of the most satisfactory k-dramas of that genre.

Both dramas have characters who time-travel to the past. The difference is that in Somehow 18, the main character had a purpose for time-traveling and in Love, Timeless the time-travel is an accident that the main character happily accepted.

Both are an office romance between a boss and an assistant. Both are funny and the assistant manages to change the boss for the better.

both involve an awesome female lead that's good at fighting, is highly intelligent, and good at revenge.

Both are by the same director and are crime shows. Also, both the female leads have a supernatural ability while the male leads are cops. (Black - she can forsee death, Voice - her hearing is more improved)

They both have the same lead actress. They both involve a "tragedy", a loss of memory, and the rekindling and rediscovery of an old relationship.

Both dramas have very similar stories. They both involve childhood, separation, reunion, and rival partners.

Both dramas are focused on deceiving somebody who is rich, to gain something. The female protagonists deceive the main male protagonist by acting as someone else's' replacement. Eventually, both female and male protagonist will develop feelings for each other.

Both feature strong female lead and very romantic love story. The female lead in rule the world also loved another before her main love interest came along.

The drama series is based on classic Chinese novel “Journey to the West,” but reinterprets the story into the present day and has a romantic-fantasy twist.

In Master Devil Do Not Kiss Me, it is also love turning into hate. It also takes place in school and if you enjoyed The Big Boss then you should watch Master Devil Do Not Kiss Me.

Same action fast paced and the female leads are similar in several aspects. Both male leads assume the identity of another person. Both of them have to work to some bad guy to achieve their goal.

And at least, they deal with corruption in high places with a touch of comedy.

"Extraordinary Mission" revolves an undercover police officer who attempts to take down a drug trafficking syndicate from the inside. Both are action crime movies that deal with drug trafficking

The male leads are both really smart and not good at expressing their emotions. The female leads are lovable in their own ways; Chen Xiaoxi is cute and adorable while the female lead in Attention, Love! is more serious and really good at portraying first love. The male second leads in both dramas are SLS-worthy.

Can't Buy Me Love is like a parody of the original "Beyond the Realm of Conscience." It also features the same cast, costumes, and pairings.