It was easy. I already knew that あなた were LittleOtaku1, and I noticed the アイコン on KisameTheFreak and realized that it was from the same アニメ as Hidan is. And I also typed in www.fanpop.com/fans/KisameTheFreak and noticed that the page didn't exist, meaning that the account had either been deleted または suspended, which would explain why あなた have your 3rd account.
So I guess I didn't really guess. I just solved the puzzle and connected the pieces through careful observation. It's in my nature. I mean, I am planning on going into the FBI someday, after all.
