You were paid a befitting amount of money that could satisfy any of your own desires to assassinate the sovereign of a certain empire. Your remunerator was actually another opposing emperor who had a nasty grudge on your target so he wanted you to accomplish it

At the moment you stood on the grounds of royalty as you peered into the bedroom of your target through the balcony window. Your ultimate plan was to murder him while he slept but it didn't seem that he was around, or so you thought...