Responses
More than him being childish, I found Yeon so reckless, he is kind of slow and stupid. Awful shit happens to him and he is like... "Oh okay lets meet up with this crazy people! I don't care that this one kidnaped me or this other one tried to kill me haha I'm such a dumb person ╮( ̄▽ ̄)╭"
Why is it so hard for a 20+ to be safe and be smart?

It was good, & it's probably just my personal preference in characters, but near the end I really started hating Yeon's childishness. I found it really irritating, and when Ahn Jun came out about having feelings for Taeho I PRAYED they'd somehow end in that couple even if I also knew it was impossible.
Overall, i think I ruined a good story for myself by hating a main character.