1girl, black_hair, brown_footwear, brown_skirt, dated, facing_away, from_behind, gradient_background, grey_background, hibike!_euphonium, kitauji_high_school_uniform, kousaka_reina, loafers, lying, nii_manabu, on_side, pleated_skirt, school_uniform, shoes, short_hair, signature, skirt, solo, thighs, zettai_ryouiki