2girls, ahoge, blush, curled_horns, demon_girl, demon_horns, demon_tail, eyebrows_visible_through_hair, girl_on_top, greyscale, hair_ornament, hairclip, heart, heavy_breathing, horns, licking, long_hair, lying, monochrome, multiple_girls, on_back, open_mouth, simple_background, tail, tongue, tongue_out, trembling, yuri