ae-3803, red blood cell (hataraku saibou), hataraku saibou, commentary, highres, 1girl, :3, :d, ahoge, badge, black shirt, blush, breast pocket, brown eyes, button badge, close-up, collarbone, drop shadow, gloves, hakumamu (m12 h86), hat, hat ornament, jacket, looking at viewer, newsboy cap, notice lines, one-hour drawing challenge, open clothes, open jacket, open mouth, outline, pink background, pocket, portrait, red hat, red jacket, salute, shirt, short hair, simple background, smile, solo, t-shirt, three-quarter sleeves, very short hair, white gloves, white outline