Yoruichi fucking loves to suck cock, she has made a habit out of giving head to almost every guy she meets in 1 on 1 situations, this is what lead to her sucking cock in the middle of hueco mondo with her tits out. It just so happens that the cock she was sucking was deep inside her student's pussy earlier that day, Yoruichi immediately recognised the taste of Soi Fon's pussy on his cock and asked him about it. Considering how horny Yoruichi is, it's no surprise that she eats Soi Fon's pussy enough to recognise the taste on his cock. This only made it hotter, then she gave him a sloppy deepthroat suck