The relationship between the main characters is rare in that they actually talk through their issues instead of avoiding each other for the sake of drama.
The actor playing Jin is absolutely amazing, you can read every emotion his character is feeling from his eyes. The other main is a little more stiff, not sure if that's a choice for the character or just lack of skill, but it didn't ruin my enjoyment, the chemistry was very much there.
Another thing that rarely happens was that I liked every character, none of them felt like they were just filling space, the friend groups were fleshed out well.
If there's ever a second season, and for the sake of the side characters I hope there is, I'm definitely rewatching the first as well.