A Glitch's Nightmare
Things were very rarely "normal" or "all right" for the villains of the multiverse. Between illness and other surprises, Error, Nightmare, and their crew charged into battle to prevent the balance of the universe from tipping.
The Star Sanses have been growing apart. However, Ink and Dream teamed up and fought against them, against Blueberry's wishes, and won.
Error is sealed away in the Anti-Void, but he'll be damned if he didn't keep the promise he made to Nightmare.