MEZZO" Is A 2-Person Sub Unit Of The Fictional Idol Group IDOLiSH7. MEZZO" Consists Of Tamaki Yotsuba CV KENN And Sogo Osaka CV Atsushi Abe 阿部敦 From IDOLiSH7. During The Shuffle Unit Portion Of The Story Where IDOLiSH7 And TRIGGER Are Having Their Joint Practice Ryunosuke Tsunashi CV Takuya Satou From TRIGGER Is Added To The Group For Only A Short Period Of Time.