1girl ahoge arms_behind_back black_hair blue_skirt blush breasts brown_eyes crop_top crop_top_overhang gogo_shichi-ji hair_between_eyes highres kantai_collection large_breasts long_hair pleated_skirt school_uniform serafuku short_sleeves simple_background skirt solo thigh_strap thighs ushio_(kantai_collection) white_background