1girl armpits beach bikini black_hair blue_hair breasts claria cleavage closed_eyes commentary_request cowboy_shot front-tie_top highres large_breasts long_hair makishima_saori navel no_eyewear ocean open_mouth ore_no_imouto_ga_konna_ni_kawaii_wake_ga_nai side-tie_bikini_bottom solo stretching swimsuit underboob