[... ah. It's probably a good thing that Day can't see Phil's face and how it falls at the mention of going home. Going home means going back to atone for his sins-- facing the reality of what he's done. It's his responsibility, of course, and he would never try to shirk it, but... this place allowed him a dream he'd never thought possible.]

... yes. I have much that I need to do there. And... I couldn't ask you to accompany me, not when the entire world is still in danger...

[But he wants to. He wants to, more than anything, because he doesn't want to let Day go either.]