In Great Sage's recollection, all seems to be smooth sailing for Tempest... but then the oldest of the Demon Lords, Milim Nava, arrives! Rimuru, as Milim's bestie, is appointed by the majority to be in charge of keeping an eye on her. With no knowledge of this, Milim explores Tempest and interacts more with the residents of the city of monsters... and Rigurd keeps track of all the damage she causes along the way in a report for Rimuru. "Rigurd... are you angry?"
A Demon Lord, the individual 
called Milim Nava, attacks.
سيّدة الشيطان التي تُدعى ميليم نافا، تُهاجم
Ein Überfall durch einen Dämonenkönig,
bekannt als Milim Nava.
Ataque del Rey Demonio Milim Nava.
Ataque del Rey Demonio Milim Nova.
Attaque du roi-démon Millim Nava.
L'invasione del Re demone di nome Milim.
Lorde Demônio.
На Темпест
напала Княжна Тьмы Милим Нава.