"This song is for you."

December 31st, 2017. The Budokan.
Second day of the TSUKIPRO Concert.
Curtains finally rise on the 17-man dream performance of SOARA, Growth, SolidS, and QUELL!
Huh?
ماذا؟
¿Qué?
¿Qué?
Hein ?
Hein?
А?