aoi choko (aoichoco), kamado tanjirou, tomioka giyuu, kimetsu no yaiba, highres, 2boys, age difference, black hair, black jacket, blush, brown hair, checkered haori, demon slayer uniform, empty eyes, from behind, haori, high collar, hug, jacket, japanese clothes, kikkoumon, looking at viewer, low ponytail, male focus, multiple boys, onii-shota, open mouth, ponytail, print haori, red haori, short hair, spiked hair, teeth, watermark, yaoi