Slight color arose past Gen's poker face, spreading from ear to ear. He shivered. It's a subtle little change, and probably not one another person could easily coax from the Mentalist. Senku had many years of experience by then. Gen tried to pretend he wasn't blushing, saying loftily, "You've gotten one over me so infrequently, of course they stick out in my mind out of mere novelty."

He leaned just slightly towards Senku, though, instead of moving away from this embarrassing conversation. Gen smirked - "If I'm to get the blame from you either way, of course I should take credit for such a illiant-bray idea."