I read the novel and I’m not sure it might be a Kiss me Liar side story. There wasn’t much on Keith I think, but he and Yeonwoo show up 3-5 times throughout the novel, Yeonwoo is the head of P Entertainment (or smth like that idk) so I don’t think Yeonwoo ran away or anything.
This novel takes place a few years after the events of KML, KMIYC & RAYIC.
Chase and Josh have three kids, with Keith and Yeonwoo having 2 already.

What thing was the psychic talking about regarding Keith potentially losing something? Is there more angst in Yeon Woo's and Keith's story that I'm unaware of?