Rubick carried the half-dead Blueno around for a while, still torn over what to do. At last, he killed him and extracted the Door-Door Fruit.
As soon as Rubick absorbed the Door-Door Fruit into his body, he learned how to use its power.
His heart racing with excitement, Rubick pushed open an Air Door before him. Beyond it lay a Parallel Space filled with green light.
Rubick stepped inside and closed the door behind him. He felt as though he had been peeled away from the original world and placed in its reflection.
He could still see everything in that world, but no one there could see him. Blueno's corpse still lay at his feet, yet he could not touch it.
There was nothing else in this space. Endless green stretched into the distance.
Rubick passed through a wall and found two deserters hiding inside the building. He walked right up to them, but they kept staring at the doorway, unable to see him.
Rubick understood. This Parallel Space could help him evade danger. It could also let him reposition himself precisely, since he could open a door and step out anywhere.
He named the move Mirror Space.
Rubick opened a door out of Mirror Space, giving the two marines a terrible fright. He knocked each of them unconscious with a punch.
Then Rubick opened a second door. On the other side was the Going Merry's Conference Room, a place he knew well.
He named this move Portal. It could take him to any place he had visited before, regardless of distance. The size of the door depended on his strength, though, and for now he could not open a very large one.
But once Rubick grew stronger, he was sure he could open a door as large as the