Yuuki is saddened by the death of Clayman, and Luminus is saddened by the death of Roy. Steeped in sadness, and having lost their friends, they seek their next move against Rimuru, who has grown in power and become a true Demon Lord.
The eight Demon Lords are 
now calling themselves "Octagram."
أسياد الشّياطين الثّمانية يُطلِقون
"على أنفسهم الآن "أوكتاغرام
Die aktuell acht Dämonenkönige
bezeichnen sich jetzt als Oktragamm!
Al parecer, los ocho Reyes Demonio
se harán llamar Octagram.
Por lo visto, los ocho Reyes Demonios
se llamarán Octagram.
Les huit rois-démons actuels
ont adopté le nom d’Octagramme.
Hanno fondato un gruppo 
di otto Re demoni chiamato Octagram.
Os oito Lordes Demônios agora
se autodenominam "Octagrama".
Истинных Князей осталось Восемь…
и они нарекли себя «Октаграммой»!