1999. The "end of the world" that was talked half in doubt since Nostradamus' prediction was finally proven wrong. But unknown to the public, an abnormal phenomenon was starting to spread. A "Disease" which disturbs the normal cell division process, making young girls' body rot alive, slowly killing them. And a beautiful and grotesque being born from this disease, guided by a hapless fate, starts walking on the borderline between good will and ill will, with the wafting sweet scent of death.

Biscuit Frankenstein was published for the first time in May 2009 under the light novel label "Megami Bunko", and then republished under the label "Kodansha Box" on September 2, 2013. The Kodansha Box version is the "full version" (完全版) of the story, adding a whole new chapter called "Potato Chips: Tsumeato Shinkeishitsu" (potato chips:つめあと神経質) in the middle of the story. That chapter was initially cut out in the first edition to avoid making the book too big, and makes for about 15% of the total pages by itself. The novel won the 9th Sense of Gender Awards Grand Prize in 2009.