[He nods. Time to be a super nerd.] Right. Spirits allow us to use spirit artes by taking mana that humans produce using a portion of our brain called the mana lobe. Some people aren't able to produce enough mana in their mana lobe, however, and so they can't use spirit artes. [And then there are the people from Elympios who have no mana lobe but... we're not gonna get into that.]

Seraphim? [Sounds interesting...] It's nice to meet you too, Sorey.