angelo_(gomahangetsu) bare_shoulders barefoot bdsm bondage bound breasts chain cuffs feet full_body greyscale hatsumeno_tsubone_(sengoku_bushouki_muramasa) large_breasts long_hair looking_at_viewer monochrome open_mouth sengoku_bushouki_muramasa shackles simple_background sketch soles solo thighs toes white_background work_in_progress