Sakura, the Cardcaptor. Volume 4

The mysterious Mizuki-sensei becomes a harbinger of great changes: something large and terrible is about to unfold in the city! Sakura is gathering the last cards, and they are putting her through heavy trials, testing her strength, willpower, and purity of heart. Fortunately, Xiaolan and loyal Kerber are by her side... But wait! Will Ker-chan finally assume her true form?! What is she like — the Beast of the Seal?