After defeating Clayman at Walpurgis, Rimuru officially became a Demon Lord and a member of Octagram. Meanwhile Diablo awaits Rimuru's return in Tempest, and is anxious to learn about his master's activities as soon as possible. A look back at Walpurgis.
I hereby void all agreements 
made between the Demon Lords
أعلن هاهنا عن فسخ كافّة الاتّفاقيّات
المُبرَمة بين أسياد الشّيطان
Ich widerrufe hiermit alle Abkommen,
die zwischen den Dämonenkönigen bestanden,
Je romps ici et maintenant
tous les traités conclus entre rois-démons
Sono qui per rompere
tutti gli accordi stipulati tra Re demoni
Estou desfazendo todos os acordos de
cooperação entre os Lordes Demônios,
Я прибыла, чтобы аннулировать все 
договоренности Князей Тьмы…