[For a moment, Hanbei's smile falls into a flat 'are you serious' face before he just shrugs.]

Well, unfortunately, fighting on the same side is the only way to concretely tell! Let me ask something else, then. And don't answer with anything cheeky, base it only on the facts!

[That's asking too much, Hanbei.] Can you make yourself invincible for just a few seconds after a lot of fighting?