Cuphead In: Sketches Collide

Cuphead In: Sketches Collide is the final third book to Season One of Cuphead and Sonic, and the prelude to Doomsday

Plot
Tails wakes up in the tomb. He starts banging on the window, but to no avail. Knuckles wakes up and breaks Tails out, they run, and Knuckles finds himself getting captured and possessed. Tails runs and finds Sonic, who seems to turn evil.. Sonic and Tails hops into the void.

The two hang out and experience bonds. However, Tails passes out. Meanwhile, Sonic meets Shadow, and the three escape. Sonic and Shadow start working together.

Sonic passes out, then suddenly, he starts to doubt himself, ending season one.