1girl, dark-skinned_female, dark_skin, freckles, glasses, greyscale, hair_bun, jacket, jacket_partially_removed, looking_at_viewer, looking_to_the_side, monochrome, one-piece_swimsuit, original, profile, school_uniform, simple_background, single_hair_bun, sleeves_past_wrists, solo, sweatdrop, swimsuit, swimsuit_under_clothes, takayanagi_katsuya, tan