(I'll keep this review short because there already very lengthy and in depth one so check them out if you want to know everything)
The original version of A Love So Beautiful is way better in terms of everything. The story of this K-Drama version was not as heartwarming and deep and moving as the original hence I couldn't feel much for the characters. K version skipped many important things elements of the story that made the original one a hit. If you forget that an original version of this drama exists then this is just a bland and typical cliche drama without any speciality.
Besides the ML in this was too soft and FL was just ok in my opinion, also their romance seemed boring too there was just not much chemistry. It was a sweet remake and I kind of liked it although I skipped so many secens as I neared the end. I won't recommend watching K version of A Love So Beautiful when you can easily access the original Chinese version.

Edit- I'll re-watch the original now, it's my favorite show and I feel like this I need some healing after watching this almost bleh version.