I LOVED EVERYTHING OMG CHOI JUN WAS SO HOT I LOVE HIM. But I have two major problems with this (actually one. the second is just me being stubborn):

1) A bit rushed:
In episode 6, when the first kiss happened, it was a bit sudden, and also a bit rushed, I think (?) since Lee Jun was first so against it (kinda), saying he wasn't interested and acted a bit cold towards Choi Jun. I also would've liked to learn more about the 2nd couple since they just DIDN'T show us what happened after :(. A bit rushed.

2) SMUT:
THE END. HOW DARE YOU MAKE THEM KISS LIKE FQEIOFQEIOFJQIONEWO AND THEN JUST CUT IT OFF WHEN CHOI JUN- UGHHHHHH.
HELLOOO??? I AM HERE. I AM ASKING FOR IT. AAAAAAAAAAAAAAAAAAAAAAAA I NEEDED IT SO MUCH LOOK HOW HOT CHOI JUN IS I CAN'TTTTT I CAN'T T-T :((((((.

Anyways, overall, I rate it a 9.0 because of the TWO MAJOR PROBLEMS.
But best K-drama so far, actually. I usually hate watching them because of the damn 1 to 3 hour long EPISODES (YES, NOT MOVIES OR SOMETHING), but Jun&Jun had at its most (last episode (8)) 33 minutes, and at least 23 minutes, so it was easy to watch (kind of like an anime episode, I'm used to those).
And the music wasn't so bad, I mean, I was focused on these HOT INDIVIDUALS so the music was VERY MUCH BACKGROUND STUFF. The cast was GORGEOUS (AHEM CHOI JUN) and the acting was good as well, except for oen or two of the side characters, they made sometimes mistakes or didn't act well.
But I would definitely rewatch it, but since I don't do that often (I already watched it, why should I do that again? mentality) I decided on a 8.5. This was really the best K-drama I've seen so far (also first one I've managed to complete haha) so I'm will go to Choi Jun / Ki Hyun Woo's social media if he has one (please have one I want to stalk your instagram). I LOVE ITTTTTT