1girl, black_footwear, black_necktie, black_pants, black_vest, boots, breasts, butterfly_sitting, coat, dated, demon_girl, demon_horns, demon_tail, goggles, helltaker, horns, lab_coat, looking_at_viewer, loremaster_(helltaker), mechanical_arms, necktie, open_clothes, open_coat, pants, ponytail, prosthesis, red-tinted_eyewear, red_goggles, red_shirt, shirt, signature, simple_background, sitting, smile, solo, tail, tinted_eyewear, tsukudani_(coke-buta), vest, white_coat, white_hair, white_horns