Dang I adore Charin x Jin but why do I get the feeling that they aren't going to end up together...
That's cause Charin has enough death flags to cloak a country and the author seems unmerciful. In terms of actual development it's definitely Charin x Jin all the way.
Spoilers
Charin's almost dying words were that he was only pround of two things in his life and both points can be summarized as 'Jin loved me'
I might be alone in this, but I like Obsidian and Alexandrite. He's been waiting and respectful of her from the beginning and they looked like they had a real connection. Moon owl kinda came out of the blue for me. Sure, he might've been the childhood boy she had a crush on, but I personally didn't feel the connection between him and Obsidian. YES, he's hot, but what about the chemistry? I'm not sure yet ..
Yeah, but honestly he said Marianne as an ideal type but he stuck by obsidian even when amber came who was acting to be more like Marianne. I don’t think he was looking for Marianne like platinum was, it seemed more like he was naming Marianne like one names a favorite idol rather than actively looking only for her. ALSO I know moon owl is hinted heavily at being her crush but I wouldnt be unsurprised if it was alexandrite honestly.
You have a point, I also felt bad when Alexandrite picked Obsidian two times in a row in that truth something event but she didn't pick him. He was rejected every time. Man, I love him since the first time they talk. If only Alexandrite didn't have a connection with Marianne in the past then they would've been the perfect couple. Obsidian wouldn't be scared to talk to him in case he figured out she isn't marianne. But ugh I love both Alexandrite and Moon Owl. So I think I'm fine with either of them.
I'm so happy, yet I can't shake this feeling that the abandoning theme is a foreshadow for the future. Like when/if Seyeong finds out that Heejae had intended to abandon him right when he got Seyeong to fall in love with him, Seyeong will abandon Heejae....ahhh