Kaito held the untouched cone away from Akira. That was ammunition, damn it! You do not eat weaponry. Especially weaponry that could possibly save you from the fate of being completely covered in ice cream. He had already sacrificed one for Akira, he's not about to do the same for the other. Though, since one was already licked on...
Leaning forward, Kaito took a lick out of the cone Akira wasn't holding and wrinkled his brows when some got onto his nose, making a small protesting noise from the back of his throat.