[Even the eye widening is telling enough, but the fact that Sougo didn't seem to anticipate that question at all and that he isn't giving what should be a very easy answer one way or another drives it home. Momo's manner becomes much more serious and grave in an instant, because if this is the line they're going down this could be a very big problem.]

You've been here as long as I have, and I was cutting it fine enough getting a Bond last month. [Not mentioning his familiars - he doesn't want to give Sougo an avenue to grab onto for an easy lie.] If answering that question isn't a "yes" for you by now, you know how much danger you're putting yourself and others in, right? No wonder you feel terrible, but you need to find an outlet quickly.

[A backtracked "yes" at this point isn't going to convince him, because half of picking a lie is someone's reflexive reaction in that moment before they can manufacture something else.]