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...
So we're asking all the Procella members
what kind of recital Rui should play,
نسأل كلّ أعضاء بروسيلاروم ما نوع
المعزوفة التي ينبغي أن يعزفها روي
So hat sich das zugetragen.
Rui dará un recital y entre todos
los de Procellarum buscamos ideas.
Rui dará un recital y entre todos
los de Procellarum buscamos ideas.
C’est pour ça
Stiamo chiedendo a tutti i membri dei Procellarum
che tipo di concerto dovrebbe fare Rui.
Estamos perguntando para todos do Procellarum
que tipo de recital ele deve fazer.
Мы спрашиваем у всех ребят из Процелларума
о том, что Рую следует сыграть.