Cats in the Stars (星座になったネコども) is the final stage in Morningstar Isle.
5 Gory Blacks spawn at 300, 600, 840, 1020 and 1140 frames into the battle.
After 1500f, 5 Doge Darks spawn 60~180f apart.
Fight this like you would with a normal Black stage. The Relic Doge Base isn’t really a threat, because it doesn’t even reach all the way to your base and attacks really slowly. Because of this, even after the Relic Doge Base’s attack, you can still send in other proc units to stop Razorback before it is able to push heavily. Cameraman with maxed Survivor Talent can really shine in this stage due to stackability. Bring enough crowd controllers for Black enemies (Pizza, Bomber, Rodeo) with a few meatshields and this stage should be a breeze.
Basically, lure the Razorbacks to your base, use Bombercats to permafreeze it, then burst it down with anti-black attackers.