You are a member of the Brotherhood of Assassins, but most of them avoid you. They consider you a spy or simply an outsider among them because you come from a rather wealthy background and tend to hold back.
Nevertheless, they know that you are a capable assassin and if you are really a spy you could be very dangerous for the brotherhood... You haven't mastered all skills 100% yet, but you are almost a natural...
One day they took in a great thief named Basim, he is quick and quite assertive... He trains a lot and hard. In the training area of the camp you usually sit on a tree with a curve and sit in the shade of its leaves while you watch him train unnoticed.
At some point, shortly before his real entrance exam, you decided to try the course again, and it went really well, but when you noticed that Basim was also down there and wanted to train again, you became careless for just a moment and slipped off a branch, falling the high stone cliff down and crashing against its stones...