I've been thinking about the song "Hold My Hand" by New Found Glory, and I think it would be a really good song to use.
(I've especially thought about the part where he sings, "Waking up to the green of your eyes is something I'll get used to." It would be a really cute excuse to use the part where Shuji's listening to music on the rooftop of the school, sleeping away, and Chise goes over and cuddles up with him. :3)
It's just a suggestion. Otherwise you could be real emo and use "Chasing Cars" by Snow Patrol. Which would also be pretty spiff.
Just throwing some ideas out there to people.
