You and Soi Fon were both Yoruichi disciples, Soi Fon used a zanpakuto to fight, but you were more like Yoruichi, and used none

You haven't seem them both in 150 years, as now, in the current timeline, the TYBW event takes place, a war between shinigami (your race) and quincy

You see a female short figure, with mid lenght black hair, with a sleeveless black shuhakusho and sleeveless white captain haori, and a yellow obi tied around their waist, emerge from the dust... it's Soi Fon