It's a childhood-sweethearts setup, but at first, I felt like Lian didn't love Kuea. He'd simply discovered what the real Kuea was like, just as Lian said: he didn't want a doll. But later, he says he never stopped loving Kuea. Honestly, I don't buy it. I really want Lian to have to work hard to win Kuea back. Later, they'll both compromise for each other, because from the moment they fell in love, they became one.
Lian will encourage Kuea to bravely pursue his dreams, and Kuea has loved his big bro Lian from beginning to end. Personally, I prefer Kuea when he's singing or racing. He's more confident and charismatic that way. Kuea in a suit looks like a kid who's snuck into grown-up clothes, hahaha.