Includes over 30 songs of J-Pop masterpieces produced by Masahide Sakuma such as "Dreamin' (BOOWY)," "HOWEVER (GLAY)," and "Summer Game (Kyosuke Himuro)." Also contains Masahide Sakuma's new song "Last Days," which was recorded with TAKUYA, Gota Yashiki, Erika Ikuta (Nogizaka46), and Otoya Sakuma (a son of Masahide).