Arboremistus

The Arboremistus is the remix multiverse, the collective set of universes involved in the canon of the remix tree. It was given a name in picotoyunokimyounabouken vol 3.

Real life

Real life is the universe that the Scratch users who made the tree exist in, and the one that Matthew Rockefeller resided in for a period of time. It is a fictionalized version of actual real life, i.e. the universe you, the reader, exist in. In the Arboremistus's real life, the remix world is considered a fictional universe that only exists in media made by remixers.

Remix world

The remix world is the oft-incomprehensible, absurd, and constantly shifting fictional world that most remix media depicts. It and its entire history was inadvertently created in 2018 by Matthew Rockefeller in their attempt to take revenge on certain OCs.

The remix world's denizens include not just characters who originated there, but OCs as well: characters from other universes who have been brought to the remix world, whether by means of characters in the world creating them, or due to remixers choosing to put them in (though if you think about it, the former is just a way of explaining the latter).

Various fictional worlds

Real life contains plenty of fictional media besides the remix tree, and thus many fictional universes exist which are considered to be part of the Arboremistus. This includes media from which characters in the remix tree are derived, as well as all the fanfic universes contained within the shipping music videos.