Neville has to consider Asato's question carefully because he doesn't have a ready answer. "I'm -- not entirely sure," he admits, speaking slowly. "Perhaps I'm just aware that you could spend your time with any of your friends today, and you chose me," he finally answers, and gives Asato a shy smile. He'd been the fifth wheel in his dorm at Hogwarts for so long, he's grown accustomed to not being chosen first in social situations, even just hanging out at the lake.