C176 Primary Weapon-level Uranium 235 Nationally Unfissioned Non-fissile Non-fissile Non-fissile Fre

According to Riko's current level, she could easily write a brand new powerful fire forbidden spell in half a day. If this spell was used to exchange knowledge between mages, it would be enough to make Titled Devil Instructor bankrupt. However, the silver-haired girl did not want such a thing.

Although such an easily written incantation could be considered powerful