[Huh. So that is a monster ritual. It isn't so different from stuff that comes to mind]

I don't know if it happens in all worlds with humans, but in mine some people spread their loved ones' ashes in some sort of place full of nature. Forests, meaningful places, the sea...

I don't think it is to keep anyone's essence alive. It's more to give the dead and the mourners some peace.

[And others keep the ashes in jars to put them on the chimney. Mouri isn't sure if Mettaton would like hearing that, though]