1girl, :d, absurdres, blue_background, blue_hair, blush, border, cowboy_shot, groin, hand_on_own_chest, happy_birthday, highres, idol, idolmaster, idolmaster_(classic), idolmaster_million_live!, kisaragi_chihaya, long_hair, looking_at_viewer, luxury_(idolmaster), multicolored_hair, navel, shirt, shuucream_(syuichi), simple_background, sleeveless, sleeveless_shirt, smile, solo, two-tone_hair, white_border