Rimuru decides to throw a summer festival resembling the ones held in Japan. The monsters have never experienced a summer festival, but when they hear that it's a party, they go all-in to prepare. All the monsters of Tempest work together and eventually come up with masks, paper lanterns, and even festival floats. On the day of the festival, everyone in the town enjoys piping hot takoyaki, cold shaved ice, yukata, and a Bon dance. In the end, they fill the skies with fireworks as the festival reaches its climax...
This city's culture continues 
to evolve through its parties.
تستمرّ ثقافة المدينة بالتطوّر من خلال حفلاتها
Die Kultur in dieser Stadt
wird durch Feste vorangetrieben.
La cultura de la ciudad
evoluciona con cada fiesta.
La cultura de la ciudad
evoluciona con cada fiesta.
La culture du pays continue
à évoluer grâce aux fêtes.
La cultura di questa città 
continua a evolversi di festa in festa!
A cultura desta cidade continua
a evoluir através das festas.
Культура нашего города
развивается с каждым праздником!