Last month's B’z presents UNITE #01 setlists which GLAY performed alongside with B'z in Yokohama Arena
01. UNITE
02. Ai no Bakudan
03. juice
04. IT’S SHOWTIME!!
05. Koi-Gokoro
06. Kodoku no Runaway
07. Still Alive
08. ZERO
09. girigiri chop
10. Hadashi no Megami
11. ultra soul
12. Sayonara Nanka wa Iwasenai
GLAY sung ultra soul together with B'z and the setlist for both dates is the same
So I assume the same thing goes for B'z & Mr. Children's too
https://urajp.se/bz-presents-unite-01-glay/
https://ameblo.jp/kobatyan12/entry-12697271492.html