This year's December issue of Shonengahosha's Young King Ours magazine revealed on Monday that the final chapter of Satoshi Mizukami's Nihonmatsu Kyōdai to Mokuzō Keikoku no Bōken (Adventure of Wooden Valley or lit: The Nihonmatsu Siblings and the Adventure of Wooden Valley) manga will run in the next issue on November 30.

Mizukami launched the manga on June 30.

At the beginning of the "Japanese-style fantasy battle" story, mechanical sparrows chase after the girl Nerine on a moonlit night, but a boy and a girl save her. The boy is the older brother Akahiko, who is sullen, stingy, and polite to a fault. The girl is the energetic younger sister Yukio, who can manipulate snow. The pair are supernatural problem-solvers for hire, doing anything from intimidation to exorcisms as the Nihonmatsu siblings. (Note: Name romanizations are not official.)

Mizukami drew and wrote the Lucifer and the Biscuit Hammer manga, which launched in Young King Ours magazine in April 2005, and ended in 2010. JManga once carried the manga, and Seven Seas Entertainment later licensed and released the manga in print in North America.

Mizukami launched his Spirit Circle manga in Young King Ours in May 2012, and ended the series in March 2016. Shonengahosha shipped the sixth and final compiled volume in June 2016. Crunchyroll began simultaneous publication of the manga in 2014, and Seven Seas Entertainment released the manga's first volume in print on October 10.