Hello I am new to this forum. I am currently writing a story for a manga I want to make. I just realized my story has obvious similarities to a movie I've watched before. Thinking on whether I should change some parts in my plot or just keep it the same because I don't want it to be labeled as a rip-off. I'm also far into the plot and currently I'm working on the characters. The part I'm having a problem with is the antagonist. He stole everything from the hero --- his fame, life, etc. In other words, he kind of replaced the hero's role in the story. The hero doesn't know it at first and when he finally does, he wants it back. Do you have any advice for this?