Kind of a boring episode, and they even included recaps in it.

Veldora ought to be in just for safekeeping. In the first place, I doubt Rimuru, with the power he had back then, could have devoured Veldora so simply. The other possibility is that Veldora really was devoured the same (with his own cooperation), but the seal is actually protecting him from being digested. So, if the seal eroded enough, I guess Rimuru would then quickly vomit Veldora out. Who knows.

The plague doctor mask dude, who's trying to manipulate the orc, unsurprisingly got the voice actor who's always in the roles of villains trying to manipulate others.