Kise looks victorious, because Kurokocchi does need looking after. He looks after everyone else.

"I hope so too," he said as he popped a sausage into his mouth. "So what are your other plans while visiting?" he asked, looking back to the Kuroko parents. "If you want, I can see if my parents are available for dinner. Mom might not be, but dad's always free. And my sisters too, probably if you don't mind the chaos."