There's a moment where Falcon seems to stagger at Zenkichi's words, taking them in... then, he rolls his eyes as comprehension dawns.

"Very funny," he says, somewhat sharply, but it's not malicious, and his expression quickly mellows out again, somewhat. "But... I suppose that's fair. You've already seen the inside of my heart; it's not like there's much left to hide."

He seems to turn something over in his mind, before he continues.

"... And, I suppose you are my half-brother, in a way," he says. "Getting to know you won't be the worst thing in the world... if you don't mind."