Strange things are afoot in Sakura's neighborhood again, beginning with the appearance of puzzling transparent cards in her dreams. Those same dreams have brought her a key that can capture the cards, but as Sakura begins to round up the troublemaking cards that are complicating her shiny new middle-school life, the mysteries only multiply-- beginning with the mystery of the new transfer student in her class...

Reads from right to left. First published in Japan in 2017 by Kodansha Ltd., Tokyo.