Well... with the introduction of ebisu eika, they’re already children’s in the underground, albeit that “that” underground is one of the many, many underground they’re on it (old hell, new hell, spirit world, animal realm, and I think that’s all?), and that those kids are neither dead and too young, or still fetuses, yet, I don’t know if they laugh or not, since... they’re dead, and that they all do is stacking stones to... something?..