Punishment is a must - investigation is an option. Just like real life!
+
@ultraleaf Actually, it does not. Aren't materials just provide more stabile environment to draw gliphs? As they said in this chapter, the power depends on size and precision.
But if the blood made the gliph unerasable and thus prolonging it's effect - that is another story.
That's only if they're using the same kind of magic ink, no?
The ink is what makes magic works in the first place, since afaik, even if you draw glyph using normal ink, it won't work.
I mean, the first incident happens because our MC decided to use the freebie pen with ink included when she draws the glyph.
Also, I just noticed that the author foreshadowed the whole blood-as-ink stuff. Neat.
You can tell that Agate at some point is going to be "that character" that gets jealous of Coco that the Brimhat are so investing in "someone like Coco", then proceed to be lured by the dark side.
@gibmemangospls
My assumption/understanding is that while the blood of regular witches ought to be the same as anyone else's (since they're just educated regular people) but that our Brimhat friend here has probably modified his body or his blood through a spell (likely tattooing a glyph, like the inspector mentioned can be done) which has altered the properties of his blood.
Bit of a spoiler for the next chapter, but we'll find out later too that ink can be mixed with all sorts of things for different magical effects. So that could be what was done here, too.