MK1 Headcanon:
On early childhood,Kid! Sektor witness her mother;Madam Bo enjoying have gangbang section with selected male Lin Kuei's ninjas as Madam Bo once a prostitute.One day as Kid!Sektor peeps from the door and watching Madam Bo being fucked by a random men,Kid!Sektor suddenly being picked up by next fucker and bring her to the room where Madam Bo with other male adults.Madam Bo taught young innocent Kid! Sektor how to pleasure the men and both mother-daughter enjoying to be fucked by men together until Madam Bo left Lin Kuei
(Accepted!)
From that day onward, Sektor completely understood why her mother was such a slut, and she even joined her in pleasing men quite often, learning from a young age how to be a great slut, how to suck, stroke, jerk off, kiss, and take dick in each of her holes, multiple at the same times even.
Even if she later tried to distance herself from it and become a 'proper' ninja, she, never forgot or entirely stopped being a horny whore.