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.
the Ten Great Demon Lords are now 
the Eight Great Demon Lords, right?
أسياد الشّيطان العظماء العشرة هم
الآن أسياد الشّيطان الثّمانية، صحيح؟
dass es nicht mehr die zehn großen
Dämonenkönige sind, sondern nur noch acht.
non siamo più i Dieci Grandi Re demoni,
siamo in otto.
os Dez Grandes Lordes Demônios
agora são apenas oito, não é?
От Десяти великих Князей
осталось только восемь?