Honestly, i dont know where to start.
Although this drama doesn't score an overall 10 from everyones ratings heres exactly why i scored it 10.
This drama is like a pioneer to many other dramas your typical love story kdrama and is considered a "classic" amongst bof and dramas that came out in that generation. Of course in our generation now we have DOTS and Goblin etc.
Why i gave this drama a perfect score?

Of course the drama wasn't perfect and there are many dramas out there where the story and everything was on point but emotions are heavily portrayed by the audience in this drama. There are many people who watched this drama when it first came out and it could've been considered the best then, the feeling of nostalgia when watching this could also correlate to everything that you experienced at that time. I am actually writing this review after rewatching it after 3 years . All the memories i had of what went on in 2013-2014 (i watched it then ) in my life and all those aspects are brought back while watching this drama, "omg life was so carefree back then, i got to do this and that without having to stress about school" feelings like that are brought back to you. I would understand if the people who just watched this gave it a decent score cos being honest if i only watched this drama now i might not have been able to give it a high rating comparing to the work they're putting it now. However this drama is considered timeless in my opinion (even getting to see Jong Suk's cute role before the fame hahahahaha)and thats what makes the rewatch value so high.

Hyun Bin, honestly theres not words to describe him i absolutely love him and in this drama his acting pulled off very well. Theres nothing to dislike about this man i must have explored all his dramas and movies after watching this drama of his through the body swap and all his acting was perfect. Especially the sad parts in this drama *not spoiling* i couldn't grasp myself and tears fell out, even after rewatching i think i even cried even more heavily after watching the scene at the end of episode 18 after all these years of boasting to my friends that i have become a man now, i crumble right infront of them LMAO. The secretaries and Ha Ji Won and especially Oska to all of them the cast was so cute and funny and loved their acting also <3

Overall;
I don't want to get too carried away but honestly if i had to describe this drama to myself, it'd be heartwarming i decided to rewatch this after going through a heavy period of depression and it honestly cheers me up so much especially Oska's role absolutely perfect for that. Missing the days of being able to play around and my childhood and bare in mind im only 17 now through this review im hoping there are a lot of people going through a hard time and could relate to how i feel when i watch this drama.