Todash is a place of being that exists between universes, and that a person travels through to get from one universe to another. The todash state is usually accompanied by the "kammen" or chimes, which produce an unpleasant or pleasant sound similar in effect to a thinny.
There are several ways that a person can "go todash".
Going todash is very dangerous. It is possible to get stuck between worlds in the "todash darkness," from which there is no return.