I didn't view Sun as an antagonist in XOXO by any means! I pictured him simply as the more serious Hyung - he's the leader, the mature one, and the one who needs to keep his brothers grounded and focused on their careers. His personality was a necessary contrast to theirs.
In fact, him helping Jenny at the end really proved he himself was also opening up - it melted the heart. :) I liked him in both XOXO and ASAP!
In fact, him helping Jenny at the end really proved he himself was also opening up - it melted the heart. :) I liked him in both XOXO and ASAP!