[Grey shifts a little and frowns, an uncomfortable feeling creeping up his spine.]

What reason would I have to lie to you about that? We're supposed to be collaborating so I'd have to share my findings with you.

[So he'd just have to say it in the first place, wouldn't he? Unless it was a situation where he thought it better to ask forgiveness than permission- but it isn't as if he needs Manabu's permission...]