This is one of those shows where the message is about the journey, and the plot very much takes that route. I think this could have been stretched out to 12 episodes to give a little bit more of fleshing out because the ending was very rushed, as does it usually is. Ep. 8 is was pretty much all filler just to get to that end scene, the 2nd to last episode curse and then conclusion and end. I can't help but feel like I've missed something.
What happened to Junior's brother Little? Does Junior ever visit after he went to Bangkok?
What happened to Nam? He became a bully and then just fell off the face of the earth.
Did the 'bad guy' die? He was hit on the back of the head. Did he live and get rearrested?
Who was the guy on the phone?
How far away do Jeng and Judd live from the school because they got to Sun reaaaaally quickly LOL
How did Sun turn back into a human? How did he get from the hospital to Junior?
I honestly wtf'd my whole way through the final 2 episodes LOL

The plot focused on Sun and Junior's journey and everything else just danced around them.

I almost feel like we had another director for those final episodes. There was a drastic change of tone for me, so much so that the humour that was littered throughout the show, which I had been enjoying up until then, seemed really out of place.

Having said that, it is what it is, and I still enjoyed it but things did go wonky at the end there.

The CGI stuff didn't bother me honestly. Even that last scene of Junior fulfilling his dream didnt bother me. I get it. CGI is expensive. It's ok, I'm not going to be too harsh about it. Did laugh a little at Sun visibly sweating in his artic clothing with the wind sounds and green screen northern lights LOL

Overall, it's a sweet quirky show, kind of a filler for your afternoon type of show and I thought the ML's as newbie, did well for their first roles.