Born into a family of musicians, Procella member Rui Minazuki and his older brother Rei were taught piano beginning at a young age.
Rui was quickly praised as a prodigy, but Rei was devastated by his brother's talent and abandoned the path of music.
Because of that, the two were alienated from one another for a long time, but currently the bad blood between them has been resolved, and they're back to getting along as brothers.

One day, Rui is asked to perform a piano recital as part of promoting the Full Moon Festival.
Together the members of Procella brainstorm ideas for the recital, and they go to visit Kai on the job in order to get his opinion as well.
By coincidence, this outing takes them to the university hospital where Rei works...
among people who don't 
normally listen to idol songs
لا سيّما الذين لا يستمعون عادة
،لأغاني المغنّيين النجوم
a quienes no suelen escuchar a idols
de cara al Full Moon Festival.
de cara al Full Moon Festival para
gente que no suele escuchar música idol.
tra le persone che normalmente non ascoltano gli idol
em meio a pessoas que não
costumam ouvir idols,
познакомить людей
с песнями идолов.