Han Hyo Joo and Lee Seung Ki's Chemistry

What do I think of their chemistry in Brilliant Legacy? It's really something to see them argue a lot and get along. Hmmm... I honestly like her chemistry here with Lee Seung Ki. I didn't like the idea of pairing him up with Seo Do Young who has an age gap of six years. What do I think? I think I want them to end up together.