0525amanonoa, 1girl, akagi_miria, blurry, blurry_background, blush, brown_hair, character_name, collarbone, crop_top, frilled_shirt, frills, glowstick, groin, happy_birthday, headset, idol, idolmaster, idolmaster_cinderella_girls, idolmaster_cinderella_girls_starlight_stage, lens_flare, looking_at_viewer, navel, outstretched_arm, shirt, smile, solo, sweatdrop, two_side_up, upper_body