Nope, it's been with him since he became duke pendragon. It was probably passed down to him when his father passed away. It's just that he couldn't use it's full power before because he was still conflicted with himself. So like what Soldrake said in this chapter (maybe it's part of the novel or not and they just included that part here as a memory) since he accepted who he was as Raven and Duke Pendragon, he would now be able to use it's full power.
that sword was out of the blue, or not? i dont remember, i mean its a jolly joker and ofc now he wins the fight..
Nope, it's been with him since he became duke pendragon. It was probably passed down to him when his father passed away. It's just that he couldn't use it's full power before because he was still conflicted with himself. So like what Soldrake said in this chapter (maybe it's part of the novel or not and they just included that part here as a memory) since he accepted who he was as Raven and Duke Pendragon, he would now be able to use it's full power.
He literally used the sword from the beginning since the first mission and never once left it