Kuroninja knew that Anti-Kuroninja was planning something, but he didn't know what kind of shurikens Anti-Kuroninja was using, and how they were able to summon an orange ranger from another universe. However, something that Kuroninja was able to do was place a tracking device on one of the Cyberninjas. Kuroninja quickly followed the signal.
Before Anti-Kuroninja found out that one of his Cyberninjas had a tracking device on it, Kuroninja followed the signal to an area where Anti-Kuroninja had captured the Red Ninja Steel Ranger. Surrounding the Red Ranger were several Cyberninjas, including Swordblade A. They didn't notice Kuroninja was behind them, because Kuroninja was using the Kage Shuriken to hide himself from them. Kuroninja took down one of the Cyberninjas and revealed himself. Swordblade A and the other Cyberninjas began to attack Kuroninja. Kuroninja then defeated all the Cyberninjas, except Swordblade A, who escaped.
Kuroninja then proceeded to free the Red Ranger, who stood up and attacked Kuroninja. Kuroninja didn't know why the Red Ninja Steel Ranger was attacking him, or why he was in Japan, but then he realized that he could've been captured and brainwashed by Anti-Kuroninja. Kuroninja tried to defeat the Red Ninja Steel Ranger, but the Red Ninja Steel Ranger defeated him.
"How could I lose to a red ranger..." Kuroninja said, before collapsing onto the ground.
Anti-Kuroninja knew exactly what to do with Kuroninja. He knew that eventually, the Ninningers and the Ninja Steel Rangers would get involved, so he decided to brainwash Kuroninja. However, Kuroninja was Anti-Kuroninja's archenemy, so Anti-Kuroninja wanted to make brainwashing Kuroninja fun. Anti-Kuroninja decided to unleash the worst out of Kuroninja's personality.
A few minutes later, Anti-Kuroninja had transformed Kuroninja completely. Kuroninja suddenly had black shoulder pads with metal spikes on them. He also had a black cloak, something that Kuroninja didn't normally wear. Kuroninja also had green lines on his helmet.
"Alright, Kuroninja," Anti-Kuroninja said. "It's time."
Anti-Kuroninja stood next to both of the brainwashed rangers. He said "Next, I shall go after the Gold Ninja Star!"
Recently, I have been watching a movie about the Ninningers that I have wrote a fanfiction about, but this time, I watched the ending. After watching the ending, it gave me a good idea for what I could do with Kuroninja. Later there's going to be a fight between Aoninger and Kuroninja in one of the next chapters.