魔法使いを目指すことになった「普通のひと」のココ。同じアトリエで魔法を学ぶアガットとリチェが「第2の試験」を受けているところに、禁止魔法を使う「つばあり帽」の妨害が入ります。ココも巻き込まれ、師匠のキーフリーは深手の傷を負ってしまいます。そして、「つばあり帽」がココを付け狙う真意が、ついに語られます……。海外でも大人気の、王道魔法ファンタジー第５巻！

Peril abounds as the witches of Qifrey's atelier continue their trials!
In the depths of the Serpentback Cave, a brimmed cap casts its murky shadow upon Qifrey and his apprentices. The brimmed cap's dark magic has transformed Euini into a wild beast, and Coco, Tetia, and a critically injured Qifrey find themselves surrounded by the venomous stares of the cursed Romonons. In the face of doom, these witches must once again find a path to safety using their wits and their unique qualities, but will that be enough as they battle against a powerful new enemy who doesn't play by the rules?