1boy, 1girl, brother_and_sister, burnt, covered_eyes, crying, daki_(kimetsu_no_yaiba), dying, facial_mark, from_side, greyscale, gyuutarou_(kimetsu_no_yaiba), japanese_clothes, kimetsu_no_yaiba, kimono, koyubi_(cyxmbzh0anvefto), monochrome, open_mouth, profile, sash, sharp_teeth, siblings, simple_background, sobbing, solo_focus, teeth, topknot, upper_body