×SPOILERS×
Oh wow. I finally got to read it, and it absolutely broke my heart. Poor Jamie, i haven't felt this much sorrow for a fictional character since someone very special from Shigatsu wa Kimi no uso.
We are never presented to Tom as character directly , but getting to know him through the image his brother has of him, made it all that much more meaningful. You really made it feel like both of them died, except Jamie's heart kept beating.
I'll be looking forward to the sequel if you guys ever release one.