Kisame goes quiet when he senses Sephiroth's temper fraying. If nothing else, maybe they'll back off long enough for them to cool down.

"I'll ask one more time. Where's your proof? Being in the wrong place at the wrong time does not count and you know it. If it will help, I'll even submit to an interrogation jutsu."

He'd have to compose his mind first, to make sure they didn't get at anything else, but they'd have to give him time, as there were no ninja in the capital that were capable.