Blue Magic might become one of many things girls get into for self-defense. The Gilded Astrum & Pyrite Patrol are beginning to consider whether or not to include Arousomancy in school curriculum because there's this active perverted predator going around sexually harassing the boys.
As of Friselia 10th, they had a battle with Aurum Sutrum in which slime bombs were used to stick people together, and in notfun ways.