Well, he was nothing if not patient and persistent.

"So... Um..."

Think Hisao. Think hard - there must be at least one or two topics of conversation you can come up with.

"...."

Or not. The only things he could think of right now were depressing things. Cheering up Hibiki after Shi-Chan's departure, Nakama after Claudia's departure - But someone they cared for had left too and so far he was doing a terrible job of cheering up Hanako.