Fairy Cube is a shōjo fantasy manga written and illustrated by Kaori Yuki. Appearing as a serial in the Japanese manga magazine Hana to Yume from February 2005 to 2006, the Fairy Cube chapters were collected into three bound volumes by Hakusensha and published from October 2005 to July 2006. A related short story, "Psycho Knocker", appeared in the October 2004 issues of the same magazine. Yuki began Fairy Cube with the intent of writing a shorter manga. Set in a fictional universe in which a fairy-inhabited Otherworld exists alongside present-day Earth, the series focuses on Ian Hasumi, a teenager who can see fairies, and his childhood friend Rin. After Ian's body is stolen from him, he starts on a journey to reclaim it and soon finds himself in conflict with a group of fairies who hope to capture the Earth by opening a pathway from the Otherworld.

Hana to Yume , also known as HanaYume (花ゆめ), is a semi-monthly Japanese shōjo manga magazine published by Hakusensha on the 5th and 20th of every month. The magazine is B5-size, and always comes with furoku or free supplements, such as drama CDs, pencil boards (shitajiki), manga anthologies, stationery, and calendars. Hana to Yume was ranked 4th by Japanese girls as their favourite manga anthology in a survey conducted by Oricon in 2006.