When this posts I'll start the story after 5 posts, oh and 94beaker64, if you want to help I'll gladly allow you, your one of my favorite fanfic writers! Blasting Jelly Blues is one of my favorites! And sorry about the PLZ part everyone, I was running out of room!
This sounds interesting, I'd love to read a fanfiction about Roku's past. I don't think I've actually seen this idea before. But I agree with @ Kataanger0, you should write a prologue first to spark readers' curiosity.