[Kashuu is so fucking tragic but you'd never know it because he's such a whiny brat.]

...Okita-kun's been dead for a long time, where we're from. Trying to change that... it's against what we're fighting for. [So the castle was his last chance to see Okita happy and healthy, because it'll never happen again, in his world. Any mission he's sent on that might give him a glimpse of that would probably one that consisted of ensuring his death in the future.] But Kiyomitsu should still be at the Citadel. If things go correctly, I'll be going home to him and our master there.