He doesn't want Akechi to let go of him. But even now, in this state, he knows he can't take advantage of Akechi's malleability. If he wants to go home, all Ren can do is agree, because if he doesn't, Akechi will just do whatever he wants.

When Akechi mentions food, though, he starts to laugh. Just quiet, barely-there giggles against Akechi's chest, but once he's started, he can't stop.