1girl, bare_arms, bikini, black_bikini, black_eyes, black_shorts, blue_nails, blush, breasts, brown_hair, claw_pose, cleavage, collarbone, feet_out_of_frame, halterneck, idolmaster, idolmaster_cinderella_girls, inflatable_shark, inflatable_toy, looking_at_viewer, medium_breasts, medium_hair, mole, mole_under_eye, navel, o-ring, o-ring_top, open_mouth, partially_submerged, sakura_akami, sharp_teeth, shorts, sitting, solo, sunazuka_akira, swimsuit, teeth, twintails, water