Right off the bat a lot of the story didn't make sense but somehow from episodes 1-9, I found it super easy to watch. Mostly because there was more 'telling' than showing so conflicts, emotions, etc. moved at a quick pace. Episodes 10-12 became extremely hard to watch and took me four days to complete. Despite it being nice and easy to watch, the show had many, many flaws. But I'll only list the four biggest ones otherwise I'd be here all day.

1. The setting; a public high school for rich kids or kids whose parents have good connections. Wtf
2. The characters are supposedly high school seniors, 18/19, but act like uni dropouts. For instance, underage drinking wasn't considered an issue as there were multiple drinking scenes
3. The leads' relationships with their parents fell far from reality. Towards the end, Palm talks about how his mother was dead and he had this questionable(?) smile on his face. I swear if there weren't English subs, I would have thought he was talking about how nice the weather was. I understand that the hospital was far away, but Palm made no effort whatsoever to save his mother and just abruptly declared that she was dead. That would be understandable if we saw him check for a pulse, or listen for any breathing or a heartbeat but we saw none of that and he did none of that. Instead, he screamed 'mom' 10 times and shook her arm a few times and somehow the show believes that's good enough to convince us this 18/19 y.o. knows when a human being who's just been shot is really dead?? Okay, Dr. Teenager.
4. Why did a French and Chinese gay couple decide Thailand was the perfect place to get married when it's not legal in the first place...?

Finally. Rather than saying 'Yay everything's been resolved, let's overwhelm our audience with happy love scenes from our leads' the show took that 'No we need a separation to show that the leads really do love each other but just didn't think they were good enough together' route. That might have been fine but the leads were literally separated in the final episode for a little over 10 minutes, not to mention during those 10 minutes, they played a 2-minute and 20-ish seconds flashback of Diao and Palm together! It didn't feel like they were separated, it felt like they had made plans for an island getaway but Diao had to delay his flight a day or two for some last-minute business meeting. Unlike its strong opening, it had a weak ending. A lot of their conversations at the end also fell flat and contradicted a lot of what they said and did in previous episodes.