1girl, alternate_costume, arm_behind_head, arm_up, armpits, bikini, breasts, brown_hair, cleavage, collarbone, idolmaster, idolmaster_cinderella_girls, large_breasts, navel, nikukai, oikawa_shizuku, open_mouth, presenting_armpit, short_hair, solo, speech_bubble, stretching, swimsuit, upper_body, yellow_eyes