[He listens to Senri's explanation, taking that information in, before he nods. Though there's a hint of relief to his expression, he doesn't sound all that happy about having contingency plans for his friend's death.]

... Good. Then we should be prepared for any eventuality.

[Even if he doesn't like it.]

How many individuals have you told about your phone? If you're killed, and it goes missing... You're aware of what that would mean.

[He's not saying backstabbing will happen, but he's saying backstabbing could happen.]