Gavroche took a moment, a long one, to really look at Kol. He generally had good instincts, able to know when people were messing with him, lying, spinning some tale assuming he would buy it because he was a child. He didn't see any of that in Kol. So maybe, just maybe, he was telling the truth, no matter how crazy it sounded. "Okay." He eventually responded with a small nod.
Besides, there was apparently cake. And that made the kid happy. "So where are we going?"