2girls, bare_shoulders, blue_eyes, braid, breasts, brown_hair, idolmaster, idolmaster_million_live!, idolmaster_million_live!_theater_days, kakiken, kousaka_umi, large_breasts, long_hair, looking_at_viewer, multiple_girls, open_mouth, side_braid, tanaka_kotoha, twin_braids, undressing, upper_body