1boy, 1girl, belly-to-belly, blush, boku_no_kokoro_no_yabai_yatsu, breasts, gakuran, greyscale, hug, ichikawa_kyoutarou, large_breasts, monochrome, navel, orikuchi_hirata, partially_unbuttoned, school_uniform, shirt, stomach, sweat, unbuttoned, unbuttoned_shirt, waist_hug, yamada_anna