This drama is officially has become my favorite. This drama is different than any other dramas that I have watched. I like the plot. It seems logic and I like how every episode you discover something new and it makes sense and I what can I tell is that I can't wait for another episode. I'm currently finished on episode 5. About the age thing it's perfectly fine for me. Don't hate on age gap on this drama if you have watched Goblin and liked it. 11/10 for sure :)