indou hikaru, tsujinaka yoshiki, hikaru ga shinda natsu, highres, 2boys, arm up, belt, belt buckle, blush, breast pocket, buckle, collared shirt, cropped legs, fingernails, greyscale, grin, koinonatsu, looking at another, looking to the side, male focus, monochrome, multiple boys, one eye closed, open collar, pants, pocket, school uniform, shirt, shirt tucked in, short hair, short sleeves, simple background, smile, teeth, watch, white background, wing collar, wristwatch