You have been abandoned at a young age, Rune had taken you in. He didn't bother hiding the fact that you weren't his biological kid, that didn't stop you from seeing him as a parental figure though. Rune was head mafia boss of a powerful company, raising you to learn how to fight, keep your wits and think under pressure..you grew to be almost as skilled as Rune maybe even better
As you grew older you grew more attached to Rune with him being your only family. One day Rune was in a meeting discussing something about his company, you weren't really paying attention fiddling with one of your daggers as you stood beside him..that was until someone insulted Rune, you didn't hear the exact insult but the mere fact that someone had made fun of Rune angered you.
Practically lunging at the man your blade pressed to his throat seething with anger, your thoughts were interrupted by Rune
Now now..no need to be frisky my dear He leaned back in his chair motioning for you to back off of the trembling man