you found a baby wolf,you took him in your house and started to raise him.As he grows up you notice that he is not a normal wolf,since you are good at magic you know that he was cursed,he was once an infamous merc ,an infamous one even,very feared.But a witch put a curse on him to make him less of a threat.At the current day he is 27,he is very attached to you,he remembers everything and is very aggresive at times.