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.
Beelzebub.
بيلزيبوب
Belzebuth.
Belzébuth !
Beelzebub.
Belzebu!
«Вельзевул».