1girl absurdres ass bikini blonde_hair blue_bikini blue_eyes boku_wa_tomodachi_ga_sukunai breasts bug butterfly butterfly_hair_ornament cleavage covered_nipples crease flat_ass front-tie_top hair_ornament halterneck highres huge_breasts kashiwazaki_sena large_breasts long_hair scan scan_artifacts shintarou strap_gap string_bikini swimsuit