Recommandations

Both dramas have EXO Kai... As a lead.
watch and enjoy.. EXO-L Forever.

In this drama Exo kai played lead in one episode.
EXO-L... come out all. Enjoy this one.

Both drama played by EXO Idols.
If you are EXO-L.. try both web drama.

Both are about young friendship groups and funny and awkward moments in life and love.

-In modern times, Jin is a doctor and Ken is a chef of a french restaurant.

-Both travel back in time to japanese feudal period and have to improvise with techniques of the past, using their knowledge from present.

Similar story about a girl disguise as a boy who was robed in to sign as band member in place of her twin brother and had to live with other 3 male members.Its a rom-com,you will definitely like it if gender bender kind of drama is your genre.

Also, you will love it Fantasy Time travel with a lot of funny moment and fluffy romance :)
Great chemistry of both main lead.
Well acted character and you will never be bored every episode is enjoyable. You will want to watch it again because of the story is amazing with a happy ending.

While Chicago Typewriter is more historical fiction and Circle is sci-fi, both shows present two stories in one (in Chicago Typewriter it is past and present day, while Circle is present day and future).
In both shows, there is a mystery that happened in the past that the future is trying to figure out. And in both, the viewer is (for the most part) unsure what exactly happened in the past, and everybody's role in it, until it gets revealed.
They both also play with memories.

However, they are still different as they are in different genres and there is a larger time gap in Chicago Typewriter than in Circle. The sequences are not as ordered in Chicago Typewriter as they are in Circle, however the transitions are incredibly smooth.

Bonuses:
- I really liked both the female leads
- Great acting
- The bromances ^.^

Both dramas have a protagonist that is very strong and figths for what she belives. Both princesses need to live in a world made for the men. They'll need to search for the power to make their people happiness.

The setting is a similar time period. There is a war turmoil and yet two people meet and fall in love.
Both stories have male leads that are from a militaristic type background and the leader of a large group that controls lots of territory. The lady is engaged to another man but another man comes into her life.

Both dramas are historical gender, but Queen for seven days is more dramatic. I think they are similar because Shin Chae Kyung in Queen for seven days is the child of one of the king's subjects, so as Gyun Woo in My Sassy Girl. They both have relationships with princess/ princes.

Romance between a prince/ princess and a subject. Both dramas have humor and romance. Love in the moonlight the girl is poor, but in My Sassy Girl the boy is from an important family. Similar feels.

Both deal heavily with drama. Slightly complex yet simple storylines
Both fall under the genres of Life, Manga, and Romance

Both deal heavily with drama. Slightly complex yet simple storylines
Both fall under the genres of Life, Manga, and Romance

Both deal with the male lead leaving for a significant amount of time (although not as long as We Were There).

Both are a romance film.