神風怪盗ジャンヌ Collection

Maron Kusakabe appears to be an ordinary high school student and rhythmic gymnastics club member. In secret, she transforms into a phantom thief sent by God. With the help of the semi-angel Finn, she seals demons hiding inside beautiful objects. Her theft notices and nighttime missions make her a target for police attention. The setup combines school life, action, and a magical fight against corrupting demons.