
Because I feel like this one is gonna be a tear-jerker somehow. I'm going to guess something like Gi-tae and Serin were lovers a long, long time ago but something happened that caused them to die. Gi-tae reincarnated but Serin couldn't.
That, or Serin was ALWAYS a ghost (or maybe even a god of sorts?) and Gi-tae's past self, a shaman who could see spirits, was the one who named her after they fell in love.
Either way, I feel like the plot is gonna be good and I'll end up crying by the end.

That super powerful alien (that Mori has the mark of on his cape) or one of its close underlings fell in love and somehow had a child with a human. Something happened to the human partner so after they found Mori in that basement they decided a human orphanage would be better for him to grow up in since he's more human-like than alien. But when he disappeared they obvi went looking for him. I think the one we saw recently wasn't the parent though, just works for the parent.
I have a bad feeling the human parent might be dead. If that's the case, I hope Rider becomes Mori's other adoptive parent.
She knows what she wants AND she made the first move!! AHHH!! I also like how shyness =/= being a pushover here. She's so pretty too (⁄ ⁄>⁄ ▽ ⁄<⁄ ⁄)