Recommendations

These two short dramas are very similar and I just love them both. Both depict young couples who fall in love but face trials in their relationship. If you love one, you would definitely love the other.
I personally thing that they are both great dramas and would have loved it if they were extended. Happy watching :)

The main character through live a similar change in the dramas.
And the dramas are about family-cohesion and about murder.

In both dramas, there is a girl who is an expert in one area, Math in Hard Nut and Weather in Otenki Onee-san, who help out detectives solve crimes using their area of expertise.

Dramas about human-cyborg relationships with the cyborgs developing human characteristics & understandings

Both star Ashida Mana. About the lives of children from abusive/unstable homes

Both about teachers going above & beyond for the sake of their students

Similar concept of 'not so usual' interns facing challenges of being accepted in the medical world. Romance, though context may be different, also has similar feel of overcoming hesitations

Again it is done by the same writer and director. There are casinos but also lots of explosions and exotic locations like Jeju, Africa and Las Vegas. Also starring Ji Sung.

It was done by the same writer and director as Triangle. It is a really good story with Lee Byung Hun and Ji Sung and it is all about the world of casinos.

Similar concept, divorced couple get back again.If you like one of them then sure you will like the other.

Both movies share the same intensity and atmosphere. Two loners are brought together by something they share in common, but it's the same thing that could easily break them apart. I wouldn't be surprised if Wong Kar Wai took inspiration from Midaregumo.

Both have the same lead actor with a sweet school love story...moreover both are kbs drama special

Both dramas' male leads are computer genius and CEO/founders of an IT firm.

Both dramas have to do with a parent saving their child within 2 weeks/14 days..

Both Reply 1997 and Hot Young Bloods follow the stories of teenagers in the recent past - Reply 1997 takes place in the 90s, and Hot Young Bloods in the 80s. They both pay careful attention to the aesthetic details of the era. But beyond the fact that they’re both “retro”, they also both portray characters that are normal, relatable teenagers. None of the characters are outrageously rich, celebrities, damsels in distress or alpha heroes… Both female leads are a little on the “strong” side, they’re more assertive than the male leads, that are slightly timid. The male leads, despite being awkward and flawed (and occasionally ridiculous) teenagers, are still attractive. And both this movie and this drama have a nice mix of romance, comedy, and slight notes of sadness, that sums up into good coming-of-age stories!