2girls, blush, couple, cowgirl_position, epaulettes, face-to-face, girl_on_top, glasses, hattori_masahiko, kenjou_hibiki, long_hair, looking_at_another, multiple_girls, on_person, pantyhose, red-framed_eyewear, shigure_kasumi, sitting, sitting_on_lap, sitting_on_person, size_difference, spread_legs, straddling, uniform, valkyrie_drive, valkyrie_drive_-mermaid-, wife_and_wife, yuri