Fics like The Mystic Unholy Trinity

Harry Potter-Al Ghul, Roy Harper and Sebastian Smythe are three of the best assassins of the league of assassins. Harry is the adoptive son of Ra's Al Ghul and the brother of Nyssa Al Ghul and is dating both Roy Harper and Sebastian Smythe. After Harry's fifth year of Hogwarts, Sebastian and Roy meet him at Kings Cross Station before they head to Starling City to stop a disaster from happening before they meet up with Harry's mother who is really alive. M/M/M SLASH

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