is a Japanese manga series written and illustrated by Mari Okazaki. The series is set in the Heian period and follows two prominent Buddhist monks: Saichà Â, who founded the Enryaku-ji temple, and Kà «kai, who established the Mount Kà Âya temple. It was serialized in Shogakukan's manga magazine Monthly Big Comic Spirits from May 2014 to May 2021.
A-un, written and illustrated by Mari Okazaki, was serialized in Shogakukan's manga magazine Monthly Big Comic Spirits from May 27, 2014, to May 27, 2021. Shogakukan collected its chapters in fourteen volumes, released from October 10, 2014, to September 10, 2021.
The series was commended by manga authors Ryoko Yamagishi, Yuki Suetsugu and Masami Yuki and writers Rio Shimamoto and Kazuki Kaneshiro. It was one of the Jury Recommended Works at the 23rd Japan Media Arts Festival in 2020.