Ghost Hunt , originally titled Akuryō Series (悪霊シリーズ), is a light novel series written by Fuyumi Ono. It follows the adventures of Shibuya Psychic Research as they investigate mysterious occurrences all over Japan with a team of other spiritualists and clever assistants. Although the last novel was published in 1994, the story was left incomplete.

Nakayoshi is a monthly shōjo manga magazine published by Kodansha in Japan. First issued in December 1954, it is a long-running magazine with over 60 years of manga publication history. Notable titles serialized in Nakayoshi include Princess Knight, Candy Candy, Pretty Guardian Sailor Moon and Cardcaptor Sakura. Roughly the size of a phone book, the magazine generally comes with furoku, or small gifts, such as pop-out figures, games, small bags, posters, stickers, and so on. The furoku is an attempt to encourage girls to buy their own copies of the magazine rather than just share with a friend.