Rimuru learns of the plans of Clayman and the Kingdom of Falmuth. Rimuru lost the lives of his friends and the warmth of his daily life, and as he lay in the depths of his despondency, he heard the unexpected words of Eren.

The battle for retribution has begun. Benimaru and the others carry out their respective missions. Hakurou's group challenge Shogo and Kyoya to battle once again. And then, Rimuru's wrath envelops the army of Falmuth.