1girl, ahoge, alternate_costume, black_thighhighs, blue_eyes, breasts, closed_mouth, collarbone, curtains, high_school_dxd, highleg, highleg_panties, indoors, large_breasts, lips, long_hair, navel, panties, red_hair, rias_gremory, side-tie_panties, sideboob, sitting, smile, solo, stomach, thighhighs, underboob, underwear, white_panties, window, zaphn