A fantasy in which Aoba Mori, a shy book-loving boy, must solve puzzles with Marchosias, a demon in the form of a puppy, to recover demons released from an old bag. Mixing fear and humor, the story follows him as he takes a step forward through conflict and cooperation with friends.

A shy boy chases demons released from an old bag by solving their riddles.

Toru-kun Is My Mother!? The Secret of My Classmate's Past Life won as a children's story built around the secret of a classmate's previous life. The title suggests a surprising premise in which an ordinary classmate and family memory overlap in unexpected ways.

A secret hidden in a classmate's past life strangely unsettles everyday relationships.