Procella's Yoru Nagatsuki and You Hazuki are childhood friends whose families have known each other for generations. Their personalities, preferences, strengths, and weaknesses are opposites, leading them to sometimes drift apart. However, as they continue to work under Procella, the two of them are true partners. They've spent most of their lives together. They can tell each other things too difficult to say to others. And because of that relationship, they sometimes clash... This is the, in a sense, same old story of an argument they have during a dance lesson while preparing for the Full Moon Festival.
I won't let you leave until 
it's perfect. Prepare yourself.
لن أدعك تغادر حتّى نتقنه. حضّر نفسك
Mach dich auf was gefasst!
Du gehst nicht, ehe du nicht perfekt tanzt.
No te dejaré ir hasta
que te salga perfecto. Prepárate.
No te dejaré ir hasta
que te salga perfecto. Prepárate.
Tu rentreras quand ce sera parfait !
Prépare-toi !
Non ti lascerò andare finché
non ti verrà alla perfezione. Preparati.
Só vou te deixar sair quando
estiver perfeito. Se prepare.
Пока не отработаем всё
до идеала, не уйдёшь. Готовься!