Admittedly, it threw him a little off guard when Harry walked out of the tent. He hadn't really thought about what he was expecting. But this boy looked so much like his James -- it was just, odd. Obviously, he'd figured James and Lily would have kids in a sort of vague future-y way, but that was a distant concern faced with the press of the war. And honestly, it was somewhat laughable still to think of James as a parent when he was still the mate that Sirius had woken face down in a pub with.
But, there was so much of James in Harry. A strong set of Lily though, too. The eyes -- obviously, the eyes. But in the shape of his chin, and the way he held himself a little more tentatively than James ever would.
"This is weird," Sirius said with an easy rise and fall of his shoulders. He closed the distance between them to wrap his arms around the kid, because he and James always hugged, and it seemed stupid not to hug his godson even if he was 14 and this was sort of his first time meeting him. It didn't matter in a way, because he was James' son, and Sirius would love him no matter what.
"I'm glad to meet you though," Sirius said with a wry grin, pulling back so that he could look at Harry more closely.