As the seasons turn, Rimuru plans a Bon Festival celebration. Each race has its own history, and the festival is a time to show gratitude and reaffirm their bonds among their own families and clans, and to strengthen friendships by telling others all about their own histories. And with this Bon Festival, Shizu-san returns to Tempest as a spirit...
A great wave approaches the 
world enclosed within them.
تدنو موجةٌ عظيمةٌ من العالم
Die Welt sieht sich
großen Umwälzungen entgegen.
El mundo se vuelve un gran remolino.
El mundo se vuelve un gran remolino.
Le monde qui nous entoure se prépare
à connaître de grands changements.
Il mondo che ci circonda va incontro a grandi cambiamenti...
O ambiente do mundo segue
para um grande crescimento.
Огромная волна вот-вот ударит
по берегам нашего мира.