1girl, armpits, arms_up, blue_one-piece_swimsuit, blush, breasts, chain-link_fence, cleavage, fence, hair_bun, ichikawa_hinana, idolmaster, idolmaster_shiny_colors, light_brown_hair, looking_at_viewer, medium_breasts, one-piece_swimsuit, outdoors, parted_bangs, partially_submerged, pool, ruto_mi, single_hair_bun, solo, swimsuit, upper_body, water_drop