3girls arm_support barefoot bikini bikini_skirt binoculars black_bow blue_sky blush bow breasts brown_eyes brown_hair climbing closed_mouth cloud collarbone commentary_request cozy day frills futami_ami futami_mami green_bikini hair_bow hand_up hands_up highres idolmaster idolmaster_(classic) idolmaster_2 in_tree lipstick long_hair looking_at_viewer makeup minase_iori multiple_girls outdoors outstretched_arm palm_tree peeking photoshop_(medium) siblings side_ponytail sisters sky small_breasts solo_focus swimsuit tree twins white_bikini