Zoro tucked the receipts into one of his pockets without really looking at them. Which he probably wouldn't have bothered to do, even if he wasn't turning over what the other man had just told him.
He'd never had siblings himself, but someone had been almost the same to him, growing up. He'd eaten his meals with her, he'd trained with her, slept next to her, almost every day. Kuina. "Brothers and sisters push each other around, don't they?"