"Well..." The boy shifted his weight from one foot to the other. "You see, there's this charity event that my family is organizing, and they thought it would be a good idea to have some popular people like yourself involved."
Nagatoro raised an eyebrow skeptically, but didn't say anything. The boy continued, "Anyway, we were wondering if you'd be interested in participating? It doesn't have to be anything big, just a photo op or something."