Cactus's Secret

• Name — Cactus's Secret • Ja Kanji — サボテンの秘密 • Ja Romaji — Saboten no Himitsu • Genre — Comedy, romance

• Type — manga • Author — Nana Haruta • Publisher — Shueisha • Magazine — Ribon • Imprint — Ribon Mascot Comics • First — December 29, 2003 • Last — April 30, 2005 • Volumes — 4 Cactus's Secret is a Japanese shōjo manga series written and illustrated by Nana Haruta. The series began serialization in Ribon magazine on December 29, 2003, and ended its run on April 30, 2005. The individual chapters were collected into four tankōbon volumes by Shueisha; the first on August 11, 2004, and the final on October 14, 2005. 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. To make things worse, when she gets upset, he calls her a "cactus alien" for being so prickly whenever he's around.

• Miku Yamada • Ayako Kawasumi (drama CD) • Average high school student. She was quiet in middle school, but tried to change herself in high school to impress Fujioka, whom she has had a crush on since an encounter in middle school. She is very intelligent, being the top 23 students in her school and despite Fujioka's clueless nature and initial rejection of her feelings, she continues to pursue him and eventually becomes his girlfriend. • Kyohei Fujioka • Hiroki Takahashi (drama CD) • He is a former delinquent. He dyed his hair back to black for high school. He is incredibly dense. Upon hearing Miku's confession, he rejects her feelings, saying he only sees her as a friend. However, he begins to reciprocate her feelings and confesses to her in chapter 12.

Written and drawn by Nana Haruta, the Cactus's Secret manga began serialization in Shueisha's shōjo manga magazine Ribon on December 29, 2003, in the January 2004 issue of the magazine. The series ended on April 30, 2005, in the May 2005 issue of the same magazine. 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.

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.