Recommendations

Both have girls who look the same and when the rich girl disappears, the poor girl has to take her place. Also the poor girl pretends to be the rich girl too.

They both have dobbelgangers in the drama
there is one rich girl and one poor girl that look alike, the rich girl disappears and the poor girl that looks like her takes her place

The math geniusness is amazing...not sure if the stuff is actual math though.

They're both dramas about workaholic female leads who took no time for themselves until they were told they have a limited amount of time left to live.

Both have a girl sneakin' into somewhere only boys are allowed.
In both dramas, the lead male realizes the girl's gender sooner than others and also doesn't warm up with the girl quickly although others do. In both dramas, there's a fun male character falling in love with the lead female without knowing she is a girl. Some scenes even have the same scheme and feeling. I love both lead males :D

Both takes part in a restaurant and tells the story of a love btwn chef and the worker.

Both dramas portray a nice mix of romance, and the deep love for food.

Both involve North and South Korea in conflict. Although there's no monarchy setting, it's very similar that involves melodramatic moments and a deep set conspiracy-kind of theme.

They both have former police officers they became blind and while blind witness a crime.

Both dramas tells the story of how General Yi Dan (Yi Seong Gye) became ruler of newly form country, Joseon. The Great Seer focus more on the changes that lead up to the origins of Joseon. The Six Flying Dragons focus on how General Yi Dan who is crowned King Taejo shaped and molded Joseon with the help of his son, Yi Bang Won and trusted friend, Jung Do Jeon.

They have both the same lead actors and if we fell for them in Full House then we may fall for them the second time around...

They are both similar and I love this drama can't wait for the next for kiss me

Both are cute, lovely and funny and have one lead actor - Tamaki Hiroshi.

Adult serious thing.
Both have dark, bitter, cruel atmosphere.
Must watch for noir lover.

Actors Park Young Kyu and Park Sang Won have similar characters in both dramas, such a funny and childish character, a father who does not grow up whatever progress in an age, keep of being a mama boy, although he has sons! ;'D