For the bad thing:

Quite disappointed with the ending, can’t relate on the animations part at the end of the series. And as many people said there are certain parts with a bit confusion. And slow storylines as well.

For the good things:

Anyways, overall of the series are good and enjoyable to watch. Love all the actors and actresses. They have a good chemistry together especially for the main couple YZ and XY. We can see a lot of bromance things happened in this series. Good JOB.