Black Imation and the Aswang's Antecedents

Relza's seeking revenge for his family against the Aswang's that reign every night with his old sword and being desperate to kill all but he covered his face from being a hero to ashamed of something but he will do everything to avenge with the help of Nica his old friend everything's changed. When the magical sword came and turn into human finding the B.I. (Black Imation), is Relza the B.I. a powerful sword man that worth to take the magical sword because of the curse mark? or for Relza this magical sword is another self-embarrassment?