It's day one of the festival, and Rimuru finally gets to see all of his friends' performances and presentations. As he's enojying the festivities, he's summoned by Luminus...
and the territory that 
Demon Lord Milim rules over
والمنطقة الّتي تحكمها سيّدة الشّيطان ميليم
e i territori governati dalla Grande Milim
e o território governado pela
Lorde Demônio Milim-sama
и подвластные Княжне Милим земли