meganeee31, kochou shinobu, kimetsu no yaiba, commentary request, pen (medium), traditional media, unfinished, 1girl, age progression, belt, breasts, character age, closed mouth, crossed arms, demon slayer uniform, dual persona, frown, greyscale, haori, japanese clothes, long sleeves, looking at viewer, medium breasts, monochrome, parted bangs, short hair, sidelocks, simple background, sketch, smile, white background