This year is the 25th anniversary of GLAY & 1 of the ways the group will celebrate this milestone is that they will release GLAY DEMOCRACY 25TH BOOK on 31st July
1 of the sections in GLAY DEMOCRACY 25TH BOOK is a group of musicians penning their congratulation messages to GLAY
And 1 of the musicians is AKi
https://www.rittor-music.co.jp/glay/