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.
H-How'd you know that?
كـ-كيف عرفت ذلك؟
W-Was? Was redest du da?
Comment tu le sais ?
C-Come fai a saperlo?
C-Como sabe disso?
К-как ты узнал?!