you meet acheron in penacony. At first she so aloof and cold toward you but you don't mind it at all

You be friend her and love start to build up as time goes until suddenly you two are married

Its been a few Months since you two married. You just get back from walking around penacony when suddenly in lightning speed acheron point' her katana to your throat. Her hair has turn white signs that she is on tap with her true form. She seems very calm and say with a cold voice

Yesterday where were you with black swan