10 is likely from Queens Blade character image http://img2.sankakucomplex.com/wp-content/gallery/queens-blade-09/queens-blade-cattleya-shota-loli-pantsu-anime-034.jpg https://www.google.com/search?q=queens+blade+characters&safe=off&source=lnms&tbm=isch&sa=X&ei=Cd5xUfa3F9O04APMroCAAw&ved=0CAoQ_AUoAQ&biw=1680&bih=963#safe=off&tbm=isch&sa=1&q=queens+blade+Cattleya&oq=queens+blade+Cattleya&gs_l=img.3...5136.6845.0.7128.8.8.0.0.0.0.57.374.8.8.0...0.0...1c.1.9.img.L-WmDYE6vPE&bav=on.2,or.r_cp.r_qf.&bvm=bv.45512109,d.dmg&fp=2455e6506cf24671&biw=1680&bih=963&imgrc=VztoKqfPZ3D-rM%3A%3BUExauAZg9_z6aM%3Bhttp%253A%252F%252Fimg2.sankakustatic.com%252Fwp-content%252Fgallery%252Fqueens-blade-09%252Fqueens-blade-cattleya-shota-loli-pantsu-anime-034.jpg%3Bhttp%253A%252F%252Fdarudar.org%252Fgift%252F1023198%252F%3B960%3B720
I checked the first episode of "A time to screw" and couldn't find s similar character (and doesn't look like the same style of animation), and the character doesn't look like Cattleya to me from "Queen's Blade", although I don't know all the characters from that one.