in 2019, he will appear on "eternal showa hit kayo on stage" in may and july. at the may concert, youth songs will be played, which is also their starting point, and at the july concert, gs-era songs will be played at downtown. on may 5, 2020, sony music released a 5-cd-box set of 111 songs, including a new song for the first time in approximately 30 years, as a tribute to kouki. (the first cd reprint of hideto noguchi's song, including hit songs from the ox era, hit songs after being renamed hideto maki, and even "genki no hoshi").