That Time I Got Reincarnated as a Slime (2018)

S03E09 The Scheming of the Seven Days

Diablo materializes directly in front of King Edward of Falmuth, the ruler of the enemy forces. Flanking the king are Saare and Glenda—two of the three Battlesages, renowned as the sharpest minds among the Master Rooks—standing poised and wary as the demon makes his entrance.