3girls, ^_^, ^o^, black_hair, blush, brown_hair, cake, cake_slice, closed_eyes, dddoochi1, earrings, food, grey_hair, happy_birthday, hat, holding, holding_saucer, idolmaster, idolmaster_shiny_colors, indoors, izumi_mei, jewelry, looking_at_another, mayuzumi_fuyuko, multiple_girls, party_hat, saucer, school_uniform, serizawa_asahi, smile, straylight_(idolmaster), upper_body