Elves Pull Up! - Delicious in Dungeon Episode 21 - Boss Reaction 

The elves are about to get this story to some even heavier places.The scope of their presence and actions are interesting.Yes, Kabru's mom died because of the Dungeon incident, so yes, it was monsters. Elves are feminine by our perspective, but their males are distinct of females by certain striking feature, such as choice of clothing and hair styling. Laios and his sister both have the powerful ability to easily communicate with the dead and departed, which is a tendency of their mana to manifest in such a way, just as Marcille's is exploding, separating and dissipating things.