The Ruby Void is akin to the space in-between the Cosmic Hierarchy, which precedes the Cosmic Hierarchy and that is here after the Cosmic Hierarchy. The Rubyvoid was here before the Name of the Game was introduced, before. As explained in Schklistenchism, even stepping beyond any principles of the cosmic hierarchy, even stepping beyond what's above the Metagame and under the Untergame cannot allow you to reach the Ruby Void. Journeying into what is akin to a greater beyond the beyond of the Metagame, removing Summum after Summum, denying principles of the highest apex, is only when you can touch the illusion that you are reaching the Ruby Void.

Decide was revealed the ruby void to Heir to the Stars in the story Schklistenchism, which allowed him to understand the true meaning behind that which could only be coated within ruby void.