I think They Kiss Again was much better b/c the characters actually developed as the series went on. In ISWAK, nothing much really happened from episode 5-18. Zhi Shu & Xiang Qin's relationship didn't get much different, and suddenly episode 19, he proposes. TKA was much better=]
Zhi Shu was better in TKA because you saw the different sides of him as he handled the different situations given to him (from university, to XQ, to rivals). Xiang Qin was better in ISWAK because in TKA it seemed almost like she was back to how she was in the beginning of ISWAK...utterly hopeless. Throughout ISWAK, she had grown to become a bit more independent (somewhat) and she changed, enough to make ZS fall in love with her. But in TKA, she went back to being somewhat annoying (that isn't to say she didn't develop, since she did through ZS help).
Acting and character wise, I agree secondbutton, each character was better in each season.
As for the mom, and Ah Jin, they ruled in both!!!!!!!
I can see the sun setting, it’s casting shadows on the seaPermalink
The characters are better in TKA because the overall story line is better and it didn't drag on like the first season where I felt she wasn't really getting anywhere.