1boy, 1girl, ahoge, blush, cardigan, greyscale, hakozaki_serika, half-closed_eyes, hand_on_another's_shoulder, heart, holding, holding_microphone, idolmaster, idolmaster_million_live!, jacket, long_hair, looking_at_another, microphone, minazuki_tooru, monochrome, producer_(idolmaster), short_hair, simple_background, sweat, twintails, upper_body