1girl, d, animal, bare_arms, bare_shoulders, barefoot, bird, blonde_hair, border, caustics, dot_nose, feet_up, full_body, idolmaster, idolmaster_cinderella_girls, innertube, iwashi_iwashimo, long_hair, looking_ahead, looking_at_viewer, lying, mochizuki_hijiri, on_stomach, open_mouth, outdoors, parted_bangs, partially_submerged, plaid, red_eyes, refraction, ripples, rounded_corners, seagull, shadow, smile, solo, swimming, swimsuit, thick_eyebrows, water, wavy_hair, white_border, yellow_innertube