A new force has suddenly risen to power in the Great Forest of Jura, and its leader, Clayman, proposes that the Demon Lords hold Walpurgis with the goal of sanctioning the slime who deceived him. Rimuru also begins to prepare for a battle with Clayman, but observing the enemy army's movements reveals that Clayman's target is not Tempest, but Eurazania. Clayman's army will arrive in Eurazania within two days. Can Rimuru's forces get there in time?
So it's when the Demon Lords 
get together to start a war?
إذاً إنّه عندما يجتمع أسياد الشّيطان لشنّ حرب؟
Die Dämonenkönige treffen sich also,
um einen Krieg zu starten?
Quindi i Re demoni si riuniscono per iniziare le guerre?
Significa que os Lordes Demônios
se juntam para começar uma guerra?
Это что ж выходит,
они собираются для объявления войны?