Striker lost his mother by a noble devil and took him away, and turning him into a devil to become a slave. One day Striker managed to escape. He ran from his life from his pursuers as he hide from a cave and that's where he found a strange key and a strange looking phone. He was found by the same noble devil that killed his mother and he was planning on taking him by force. In instinct he inserted the key to strange phone and once he did that a man with a red suit appear. From that day Striker's life will forever change for the better thank's to the man with the red suit who became his mentor. A crossover between another author story "The Final Herrscher's Son (Bullied OC Kaslana x Union)" by Neptunia36 and I have asked to use his story but adding the Gokaiger in here.