Rule 34 Dev - 3girls arms_up ball barefoot beach beachball black_hair black_one-piece_swimsuit blue_sky blurry blurry_background brown_eyes brown_hair cloud cloudy_sky competition_school_swimsuit covered_navel day depth_of_field english_commentary female hair_bobbles hair_ornament holding holding_ball holding_innertube horizon idolmaster idolmaster_million_live! inflatable_orca inflatable_toy innertube looking_at_another looking_back multiple_girls nakatani_iku new_school_swimsuit ocean ogami_tamaki old_school_swimsuit one-piece_swimsuit one_side_up open_mouth outdoors outside_border school_swimsuit short_hair sky smile standing standing_on_one_leg suou_momoko swimsuit tint_me_(idolmaster) toma_(shinozaki) watermelon_beachball|3371948589