Teogonia is a Japanese light novel series written by Tsukasa Tanimai and illustrated by Kouichiro Kawano. It began serialization on the user-generated novel publishing website Shōsetsuka ni Narō in August 2017. It was later acquired by Shufu to Seikatsu Sha who began publishing it under their PASH! Books light novel imprint in March 2018. A manga adaptation illustrated by Shunsuke Aoyama began serialization on Shufu to Seikatsu Sha's Comic PASH! website in March 2018. An anime television series adaptation produced by Asahi Production aired from April to June 2025.
Plot
In an era of relentless warfare, brutal battles rage between humans and demi-human tribes, such as the Ash Monkeys (Macaques) and the pig-like Ogres, who invade human lands. Kai, a boy from the village of Rag, spends his days fighting to protect his home.
Amid the brutal conflict, those known as “guardian bearers” who wield immense power, enforcing the chaos. As Kai's comrades fall one by one, he suddenly has memories he should not possess—visions of a world with advanced technology and knowledge of life beyond this one.
Though once just a simple villager, Kai is soon thrust into extraordinary trials. A grand fantasy tale unfolds, chronicling the struggle and growth of a single boy in a ruthless world.