[You'll use me to figure that out, Chikusa says, and Hakkai winces more sharply, shaking his head.]

I'd like to work with you on it. I think we all need answers.

[He exhales, and admits:]

If it's possible... I want to find a way to go back to my world once we've found those answers. If it's not, I want to stay here without fearing that anyone could disappear overnight.