1girl, bare_shoulders, blush, breasts, brown_haired_glasses_elf_(houtengeki), cleavage, collarbone, elf, glasses, greyscale, houtengeki, huge_breasts, long_hair, long_sleeves, looking_at_viewer, mature_female, monochrome, open_mouth, original, pointy_ears, simple_background, skirt, solo, thighs