Seita Horio is a Japanese manga artist born in Hiroshima Prefecture. He began his professional career in 1996 when he won the Grand Prix Afternoon Four Seasons Summer competition for his work Isosuke. Horio is best known as the writer and illustrator of the dark fantasy manga Kokkoku: Moment by Moment, which was serialized in Kodansha's Monthly Morning Two magazine from May 2008 to September 2014. The series, which spans eight collected volumes, follows Juri Yukawa, a young woman whose family possesses the ability to stop time using a mysterious stone, allowing them to move freely within the frozen world. Kokkoku was nominated for the Manga Taisho award in 2011. The manga was adapted into an anime television series produced by Geno Studio, which aired from January to March 2018.

Following the conclusion of Kokkoku, Horio created the series Golden Gold, which began serialization and is published in French by Le Lezard Noir. The story centers on a schoolgirl named Ruka Hayasaka who lives on the small island of Neijima and discovers a strange statuette on the beach that is a "god of fortune" known as a Fukunokami. As the statuette brings prosperity to the island's residents, the narrative explores the consequences of sudden economic development and human desire. Golden Gold received Manga Taisho nominations for three consecutive years from 2017 to 2019.