I wonder if the reason King Il opposed Yona's romantic attraction to Soowon in the very beginning is because he saw how much pain the dragon king's curse caused his brother's family and he didn't want Yona to have the same worries with whatever children she may have. Maybe not (probably not?), but I think it could be possible.
Oooh that makes sense. I don’t think Il was a bad person actually. I doubt he even was the one to kill his brother. Probably some priests that planned a revenge against Yu Hon.
I wonder if the reason King Il opposed Yona's romantic attraction to Soowon in the very beginning is because he saw how much pain the dragon king's curse caused his brother's family and he didn't want Yona to have the same worries with whatever children she may have. Maybe not (probably not?), but I think it could be possible.