It sounds like magic is mostly very basic rune enchanting than the common magic used in other worlds. Sort've like voodoo magic than fantasy miracle magic.

Though seemingly useless, imagine how useful Leifr's shield would be if it had runes inscribed on it that repelled blows with so much force that the attackers are sent flying! And what about carving runes on yourself? The strange possibilities are limitless, though its practicality is severely limited~

I had noticed that a type of crude Summoning magic existed already in a certain, dark form and have plans on making a character in a later era (maybe even as earlier as the Second Era!) research and perfect the summoning arts through those clues, but frilly noble tunics come first. That, and I'm not entirely sure how Adela will affect the world when UnendingEmpire returns. Maybe she will discover true Necromancy/Summoning magic first.