Unbreakable Machine-Doll (機巧少女は傷つかない, Mashin-Dōru wa Kizutsukanai) is a Japanese light novel series written by Reiji Kaitō and illustrated by Ruroo.

In an alternate historical version of the United Kingdom in the early 20th century, scientists have created a mixture of technology and sorcery known as Machinart, circuits made from spells that are put into objects to bring them to life and give them artificial intelligence.

A puppeteer named Raishin Akabane comes from Japan to Liverpool to study at Walpurgis Royal Academy of Machinart, along with his automaton Yaya.

Once every four years, the Academy holds the "Night Party", a competition where puppeteers use their automatons to fight in hopes of obtaining the title of "Wiseman".

[8] A manga adaptation by Hakaru Takagi began serialization in Media Factory's Monthly Comic Alive magazine in its June 2010 issue, published on April 27, 2010.

[39] The series is directed by Kinji Yoshimoto and written by Yūko Kakihara, with character designs by Atsuko Watanabe and music by Masaru Yokoyama.

produced by Hige Driver[43] Six original video animation episodes were released with the Blu-ray Disc and DVD volumes (one with each) between December 25, 2013, and May 28, 2014.