Setsu Suzaki and his classmates are suddenly summoned to a foreign world, and arrives at a kingdom that is just about to plunge itself into war. Most of the children are confused, except for Setsu, because this isn't his first time.
Our kingdom will now declare 
all-out war on them!
!ستُعلن مملكتنا الآن حربًا شاملة عليهم
Unser Land erklärt hiermit den Dämonen
hiermit den absoluten Krieg!
¡Nuestro reino declarará
la guerra contra los demonios!
¡Nuestro reino declarará
la guerra contra los demonios!
Notre royaume
हमारा साम्राज्य अब उन पर
आक्रामक युद्ध की घोषणा करेगा!
Il nostro regno
Nosso reino agora declara uma
guerra geral contra os demônios!
Наше царство