sumino takumi, the hundred line -last defense academy-, commentary, highres, 1boy, ahoge, collar, collarbone, drawstring, greyscale, jacket, jacket over hoodie, leash, long sleeves, makeneko, male focus, monochrome, multicolored hair, multicolored jacket, open clothes, open jacket, pants, shaded face, short hair, simple background, solo, squatting, streaked hair, sweat, two-tone hair, two-tone jacket, white background