Both are short films with a dark story and filming to them. On the other we have a vampire on the other a psychopath, but they both deliver a strong message.

Same storyline. A strong headed work addict gets a nice man to be their helper. The man already has a girlfriend and ex's make the situation more difficult. Eventually they fall in love.

Both are sweet and steady paced dramas. Also, the male lead loves the female lead and doesn't waver through both series. Only difference is that in Boss&Me they get together in the beginning of the series and TWWNIL it takes them longer.

Both have similar characters: someone that abides the law and someone who doesn't. Also both have the feeling that in this world the good guy doesn't always win.

Mizushima Hiro plays a butler in both. Kuroshitsuji is a movie and more dark than Me-chan no Shitsuji but both are good and if you liked his acting as a butler you should give the other one a try too.

Both are recent dramas that feature vampires and the male lead is searching for revenge for the death of a loved one.

Both movies have psychopaths and gore. Great acting from the leads and a plot line that makes the movie more interesting.

Both are about a masked man looking for revenge for their father. The Man in the Mask is more comical than City Hunter but both are worth watching.

Both are romantic comedies with similar funny but cute style with strong characters. Both also have outstanding acting from Yeon Woo Jin.

Both Japanese movies with a psychopath as the main character. Plots are different but with similar elements. If you liked the other you will be sure to like the other one too.

Lesson of the Evil Opening chapter is background information to the actual movie.

Both movies have a very distinctive style. Both are good, but Hard Romanticker keeps you glued to the screen when Love Exposure fades after a brilliant start. Hard Romanticker is more violent, but on some parts very funny, if you have a certain sense of humor. However both are worth watching if you enjoy this kind of films.