Recommendations

Similar plots - high school setting, girl falls in love with the class genius, a love rival (severe second lead syndrome here) and the plot progresses to university and beyond

Both dramas deal with matters of royal and imperial harems. But the story in Cruel Palace isn't limited to the harem itself as in Legend Of Concubine Zhen Huan/Empresses In The Palace. Cruel Palace deals a lot more with politics. If you want a drama that deals with the harem but it is not entirely about that, maybe you should give a try to Cruel Palace.

Both have same leads, as I was watching I felt same type if thrill in both. Actions are wow!!!!!!!
and both are about spy.I had great time watching.

In both, main leads are carrying their past life memories to make correct their present. Both drama shows strong bromance.

They are both supernatural stories about the female lead having a special power, in Black it is the ability to know when someone is about to die while in SWDBS it is super-strength. Both have a cold detective trying to solve mysteries surrounding them. Both dramas also have a rich playboy pursuing the leading lady. Both dramas have strong female leads, comedic elements, and thrilling moments. If you liked Black and want something a bit more cheerful, give Strong Woman Do Bong Soon a try!

Both are feel good dramas with a strong couple that overcomes problems together. In both dramas the main leads are mature and grounded.

Both male leads are hopeless romantics. This is the type of film that should appeal to hipsters... but is too good for them.

The premise is similar as the lead female have terminal illness and lead male is a chaebol. But more than that, it's the feel that is similar. Both are not sappy melodramas, and being a genre I consciously stay away from, they managed to pull me in.
Also, add great cinematography and solid acting from the casts.

Both about office romances. Both dramas have the same feeling to it. Male protagonist from Jugglers is much like Introverted Boss.

They both have a similar office setting where the main female actress is working with her ex-boyfriend. Also, these are two short drama series.

these are common points in both dramas, they decide to get married for economic reasons, no love no emotions, the male lead is cold and unsocial then they fell in love.

It has the same family vibe that Tokyo Bandwagon and at the relationship between father and son is also similar.

I think both of these have many similar concepts. In both of these dramas, there is a couple having trouble in their long relationship. There is also also a similarity in the concept of “dreams” too.

Definitely the same background/theme for both, though this drama approaches the theme in a more mature manner, also both female leads are energetic and lovely. Honestly I sometimes wonder if this isn't the korean adaptation of Nigeru.

I think they should let yan da have her good moment and get some sort of love scene or at least make yan da and shi kiss and let them two realise the love they have between them