Marvel After Leaving Alita Prequel

Could it be that he accidentally traveled to another world, and then he was taken into a laboratory for transformation without knowing it. Those people pressed him on the operating table regardless of his own struggle. Could it be that from the pain of struggling to the numbness of seeing his brain separated from his body, at that moment, he asked why he came here, why? Later, he was finally forced to learn how to fight, kill people, participate in wars one after another, and his body became broken again and again. Until one day, the war finally became unbearable for the earth, and humans began to relocate. The cyborgs were asked to stay and complete the final task of destroying the last floating city, Salem. Could it be that he fell from the sky and looked at the floating city getting further and further away from him... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.