"Putti!"
Puttimon pats him on the head with his wing and knocks down another couple of friendfruit, now that he knows his horn can do it. Then he considers his relationship to Tsubumon.
He likes Tsubumon; they have hopped together, and Tsubumon likes pats, and Puttimon enjoys patting Tsubumon. But something is missing. He thinks it might be connected to the thing Elecmon had that Tsubumon and Puttimon didn't have. Not the thing where he’s big - besides being big, he did a thing. It had information density.
He must have eaten some kind of surpassingly excellent fruit. That is the only explanation Puttimon can think of. So he goes off to interrogate Elecmon to the best of his ability.