Here's Usako eating out the lovely Kanu Unchuo, which is in my opinion the hottest babe in a serious about hot babes, Ikkitousen AKA Battle Vixens.

I'm still new in the series, so I'm not familiar if she's bi, or all-out lesbian, since she has the hots for the female leader of her group. In fact an episode had her wear a cursed jewel that let you act out your hidden desires and she almost raped the object of her lustful affections. Anyway, Usako better get her before she runs into Raven.