1girl, o, beach, beach_towel, bikini, blonde_hair, bottle, breasts, controller, large_breasts, long_hair, looking_at_viewer, lotion, lying, navel, nedia_(nedia_region), on_back, remote_control, shokuhou_misaki, solo, sparkling_eyes, star-shaped_pupils, star_(symbol), star_print, sunscreen, swimsuit, symbol-shaped_pupils, toaru_kagaku_no_railgun, toaru_majutsu_no_index, towel, white_bikini, yellow_eyes