Alright, nice.
I’ll just make up my own version too and I’ll see how you like it:
Vata was once a member of the (i dunno what it’s called) clan. He was one of the more aspiring members who’d try his absolute hardest to get his tasks done right in order to be recognised by the clan leaders.
However, this clan was torn apart upon the arrival of the Rouxians who massacred the entire clan. With all it’s leaders dead and only a handful of its lesser members remaining, Vata decided to take the selfish and escaped rather than helping his fellow clan members in defending what was once their hidout.
This action has left a scar on Vata as he regrets his actions to this day. And now that his clan is gone, the only way left to tend to the wounds in his mind is through Rouxian bloodshed.