Twinkling Watermelon ( since its like the current most popular k-drama ever)
And some comfort dramas which are super cute and easy to understand is
True beauty
business proposal
-------------------------
For c-dramas
When i fly towards you & hidden love ( current most popular c-dramas, both are based of books that were written by the same author )
And for some classic type of dramas
The untamed
Till the end of the moon( for me i think its overrated, but a lot of people like this and it also has a yandere ml if ur interested)