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...
They said they had an 
important matter to discuss.
قالوا بأنّ لديهم مسألة هامّة لمُناقشتها
Scheint was Wichtiges
zu besprechen zu geben.
para decirte algo importante.
para decirte algo importante.
Dame Luminus veut te parler.
Vogliono parlarti di una cosa importante.
Disseram que têm um
assunto importante.
У них какой-то важный разговор…