This is a fanfic for a (sadly) not well known series called Phantom: Requiem for the Phantom. It's my favorite anime and I love it to death (though the time skips are a bit unrealistic, especially the last one before the ending. there is no way Cal could age that much in two years!!!) *SPOILERS AHEAD!!!*  The series is about two assassins named Ein and Zwei (one and two in German) who are forced to work together for a crime syndicate called Inferno as the infamous assasin