The Big ImageBoard (TBIB) - 1girl aqua neckerchief blue sailor collar blue sky brown hair chalkboard classroom clock closed mouth day desk earphones from side hand on own cheek hand on own face head rest hibike! euphonium highres indoors kitauji high school uniform light blush looking afar looking ahead mountainous horizon nakagawa natsuki neckerchief ogura (sao no) ponytail profile purple eyes sailor collar school desk school uniform serafuku short sleeves sky smile solo summer uniform sunlight upper body wall clock window shade windowsill