- OIOI 『マルコとマルオの7日間』 Produce : Masayuki Noda (Invisible Designs lab) Compose: LADER Arrangement : LADER , Daiki Okuno Mix & Mastering : LADER Vocal : Saori Chorus : ANNA☆S Sax : Yuki Okuno Lylic : Saori , Machiko Machida