At Eponine's urging, Yosuke takes a seat for a moment. It's going to take them forever to get upstairs at this rate, but allowances need to be made for girls with no shoes, and anyway, he'd been wishing for a rest, himself.

The sea, though it surrounds their strange little island prison, is still a nice thought. He nods in answer to her questions. "It's bigger than your imagination. In the morning, it catches the sun and plays with it."

It's a paraphrase of a children's poem, and a silly line on top of that, but he can't help flirting a bit even now.