1boy 6+girls akagi_miria anastasia_(idolmaster) birthday_cake bowwow_(hamju94) cake comic commentary_request food futaba_anzu happy_birthday honda_mio idolmaster idolmaster_cinderella_girls jougasaki_rika kanzaki_ranko left-to-right_manga long_hair maekawa_miku mimura_kanako monochrome moroboshi_kirari multiple_girls nitta_minami ogata_chieri producer_(idolmaster) producer_(idolmaster_cinderella_girls_anime) shibuya_rin shimamura_uzuki short_hair silent_comic tada_riina