When I first started watching it was pretty boring. But I challenged myself and got through first few episodes. OMG it was so beautiful after that. When you can understand all the things it seems so awesome to you. Please if you're thinking about watching it then please watch it. It's so good. You won't regret it. And about the age difference i think it's cute. I laughed and cried with this show. There was no unwanted scene. Every episode always ends at cliffhanger. There is some awesome twists in the drama. That's all there is to say. Everyone praises the OST of this show. But I didn't found it that amazing. I mean it was okay.