Insanity Brothers [Undertale Multiverse]

Dreamtale. A simple story. Two new guardians created by the first. One turns to darkness in a desperate attempt at survival. The other twin rises to oppose him.
But what if the story weren't so cut and dry? Insanity Brothers takes a deeper dive into the history of the tree and its original guardian, and explores the outcome of a slightly different chain of events. After all, one small difference can change any narrative from a simple fairy tale to a tangled web of intertwining stories, where lives and universes collide and "simple" is no longer a fitting descriptor...

(Thanks to @infjarts for the desc, cover, illustrations, some chapters/parts of chapters AND for proof-reading my terrible writing)