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.
exposed the true identity 
of Luminus Valentine,
،للومينوس فالانتاين والمُتنكِّرة بهيئة خادمة
a la Rey Demonio Luminous Valentine,
al Rey Demonio Luminous Valentine,
le roi-démon Luminus Valentin,
qui assistait au banquet
l'identità di Luminous Valentine,
era na verdade uma Lorde Demônio disfarçada,
Luminus Valentine, que estava escondida.
Княжну Тьмы Люминас Валентайн,