Question:  Cherry Juice was originally serialized in a monthly "shōjo" magazine with a target demographic of what?

<P0-S0> Nakayoshi (なかよし , "good friends") is a monthly "shōjo" manga magazine published by Kodansha in Japan. <P0-S1>  First published in December 1954, it is a long-running magazine with over 60 years of manga publication history. <P0-S2>  The target demographic for "Nakayoshi" (like "Ribon" and "Ciao") is girls of age 8–14. <P0-S3>  Roughly the size of a phone book (hence the term "phone book manga"), it generally comes with "furoku", or small gifts, such as popout figures, games, small bags, posters, stickers, and so on. <P0-S4>  The "furoku" is an attempt to encourage girls to buy their own copies of the magazine rather than just share with a friend. <P0-S5>  In the mid-1990s, Nakayoshi retailed for 400 yen and had an average of 448 pages. <P0-S6>  The estimated circulation of Nakayoshi at this time was 1,800,000. <P0-S7>  In 2007, its circulation was 400,000. <SEP> <P1-S0> Cherry Juice (チェリージュース , Cherī Jūsu ) is a shojo manga series created by Haruka Fukushima, centered on a growing romance between two step-siblings, Minami and Otome. <P1-S1>  It was originally serialized in "Nakayoshi", and was published by Kodansha in 2004. <P1-S2>  The first volume of the series was released in America by Tokyopop in September 2007. <SEP> <P2-S0> The key demographic or target demographic is a term in commercial broadcasting that refers to the most desirable demographic group to a given advertiser. <P2-S1>  Key demographics vary by outlet, time of day, and programming type, but they are generally composed of individuals who are younger and more affluent than the general public: "Young adult viewers have been TV's target demographic for decades, because they're thought to have less brand loyalty and more disposable income." <P2-S2>  In the case of television, most key demographic groups consist of adults who are somewhere in age between 18 and 54. <P2-S3>  For example, the key demographic for reality television is women with disposable income aged 18 to 34 whereas for the WB Television Network it is "eighteen- to thirty-four-year-old, , viewers" Television programming is tailored to members of its key demographics: "Despite the increase in time-shifting to watch recorded television and shows on the Internet, the use of television as an advertising vehicle is still determined by demographic characteristics or who is watching at what time." <P2-S4>  The subset of ratings that only includes the key demographic of 18- to 49-year-olds is often referred to as the "key demo". <P2-S5>  Certain radio formats (especially those dubbed "classic") and television outlets may target persons 35 to 64, especially since the late 2000s recession wiped out many career opportunities for millennials, since the 35–64 demographic has much more disposable income. <SEP> <P3-S0> Haruka Fukushima (フクシマ ハルカ , Fukushima Haruka ) is a Japanese shōjo manga artist. <P3-S1>  She made her manga debut in 1999 in "Nakayoshi" magazine with her award-winning "Sakuranbo Kiss". <P3-S2>  She considers "Otona ni Nuts" ("") to be her masterpiece. <P3-S3>  Other works include "Ai Ga Nakucha Ne! <P3-S4> ", "Bibitte Mu-cho", "Cherry Juice", "Kedamono Damono", "Fortune☆Cake", "Young Mermaid", "AAA" and more recently "Orange Planet", "Kimi No Neiro", and "Animal Official". <P3-S5>  All of them are or were published in "Nakayosh"i.