2boys arm_support blush cardigan catgirl0926 clipboard closed_eyes clothed_sex covering_mouth eyewear_on_head formal greyscale idolmaster idolmaster_side-m jacket low_ponytail male_focus monochrome multiple_boys on_phone open_clothes open_jacket pants_down ponytail producer_(idolmaster_side-m) producer_(idolmaster_side-m_anime) suit yamamura_ken yaoi