Complex sentence: She later meets Tōma through someone controlled by her during Tōma's quest to pursue a magician named Yuuga Umezaki, who was said to be planning the destruction of School Garden, and it was presumed that she knew him and made him angry in the past.
Split into simpler sentences: She later meets Tōma through someone controlled by her during Tōma's quest to pursue a magician named Yuuga Umezaki, who was said to be planning the destruction of School Garden. It was presumed that she knew Tōma and made him angry in the past.