"Rock-Akechi-san, sometimes. ...It's because we both found special rocks together, although I was still Raven at the time." Nonetheless, he'll pull out his pretty blue rock to show all the same. "Although if you're getting hungry, I suppose we should consider heading back to the house. Unless you'd rather stop somewhere along the way?"

Either is valid, of course. It's hard to say how adequately the others have prepared the children.