Darkkaraszero
After the legendary Battle of Remnant, peace has finally returned to the kingdoms. Team RWBY has become symbols of hope, and Ruby Rose continues to protect the world with the mysterious power of the Giants of Light.
But peace is shattered when a mysterious Ultra Capsule appears in Ruby's dorm room, carrying an urgent warning from Ultraman Zero. A dangerous enemy has escaped from the Ultra Universe and set his sights on Remnant.
That enemy is the chaotic and unpredictable Dark Ultra, Ultraman Tregear.
As dimensional portals tear open across the world, corrupted Kaiju, Shadow Grimm, and monsters from countless universes invade Remnant. To defend her home, Ruby receives the Ultra Rose Spark, transforming her into Ultrawoman Ruby: New Generation Form.
Joined by Team RWBY, Team JNPR, Ultraman Zero, and a new generation of Ultra Warriors, Ruby must face impossible battles, uncover ancient secrets connected to the Silver-Eyed Warriors, and protect the bond between two universes.
With darkness rising once more, a new legend begins.