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...
I still haven't thought of any 
suggestions for your recital yet.
لم أتوصّل لأي فكرة لمعزوفتك بعد
Mir fiel leider noch nichts
für dein Konzert ein.
Aun no pensé en nada para tu recital.
No he pensado en nada para tu recital.
Non mi è ancora venuto in mente niente
 per il tuo concerto.
Eu ainda não pensei
em sugestões pro seu recital.
Я ещё ничего не придумал
для твоего концерта.