Rimuru confirms that it was Gustav who cursed Zenobia with illness. It turns out he and his accomplice, Carl, are Archdemons plotting to manifest their god using Zenobia as a vessel. Can Rimuru stop them before the Kingdom of Coleus is lost?
Then this is the original Demon Lord 
who was said to have fallen...
إذاً هذه هي سيّدة الشّياطين الأصليّة الّتي
...قيل بأنّها قد نَزِلَتْ
Einer der alten Dämonenkönige?
Sie galt doch als besiegt.
¿Es el Rey Demonio que se creía muerto?
¿Es el Rey Demonio que se creía muerto?
C’est donc l’ancien roi-démon
qu’on dit mort,
Lei sarebbe il Re demone originario
che si credeva morto?
Então esta é o Lorde Demônio original
que supostamente tombou...
Та самая павшая Княжна Тьмы…