Cactus's Secret (サボテンの秘密, Saboten no Himitsu) is a Japanese shōjo manga series written and illustrated by Nana Haruta.

[2][3] The series has been licensed by Viz Media for an English-language North American release as part of their Shojo Beat imprint.

Miku Yamada has liked Kyohei Fujioka since middle school, but once she gets the courage to confess, he thinks it's all a joke.

At their panel at Anime Expo 2009, Viz Media announced they had licensed the series for North America as part of their Shojo Beat imprint.

[4] [5][6] A drama CD adaptation of the first chapter was released as a mail-in gift in the December 2004 issue of Ribon, along with The Gentlemen's Alliance Cross.