1girl, abe_kanari, armpits, ball, barefoot, beachball, breasts, brown_eyes, brown_hair, covered_navel, high_school_fleet, innertube, long_hair, open_mouth, school_swimsuit, simple_background, small_breasts, solo, swimsuit, takahashi_chika_(haifuri), two-tone_swimsuit, two_side_up, white_background