I think I know what’s happening so I think Chaeheon is Narye and he knows that but after hearing Seoyo speak about him he realized that he had to “throw him off his scent” so he went and hired someone who could resemble him and told him exactly what to say and regarding the kidnapping I think he knew that Seoyo would try to escape so he probably told them to drive near the location he was at. Also it just makes sense that he paid that to do things because ain’t no way he just shows up after 2 traumatic things happened to him in a row randomly. He wants Seoyo to see him as a good guy but I think his past will catch up to him and slip through the cracks but Seoyo won’t see it until it’s to late.