Lost in the Omniverse (Multiship)

When a battle between the Star Sanses and the Bad Sanses goes wrong. The skeletons are sent to entirely different multiverses, where they meet an endless amount of different versions of themselves. With high tensions, a truce is made. Until they get back to their universe, they will work must work together. But an unknown enemy is watching, and they plan on making their mission as difficult as possible.

(Cover is made by me, but the art used in it all belongs to their respectful owners.)