Thank you for pointing this out! :) I do actually think there's something a bit troubling about Yamapi in this -- he went quite weird on me from the start, and I think it's because he's struggling to move past everything that happened to Jin. Jin finds it easier to get over things because he's glad to be alive, moreorless, but for Yamapi there's a lot of guilt and a lot of pain, and a lot of distrust, so in this one he really did take a beating. It made me sad, a bit, to see him like that, but it felt oddly necessary. I'm glad you told me your feelings on it, though, because I felt the same way whilst writing it. :)

It does mean that I may have to write yet another one, though, because I don't like him being sad. XD