It was originally published as a one-shot in December 2010, and later began serialization in the March 2011 issue of Shueisha's monthly shōnen manga magazine Jump Square.

[2] Gate 7 follows Chikahito Takamoto, a secondary school student whose strong interest in history brings him to Kyoto, where he meets a beautiful childlike warrior named Hana, who fights supernatural enemies with the aid of Tachibana and Sakura, two young men with magical powers of their own.

As Chikahito soon learns, the Urashichiken's battles go back to the Sengoku era in Japan, when warlords and other key figures attempted to defeat their rivals by forming blood contracts with powerful spiritual beings known as Oni.

[17] Praise was given to the beautiful and highly detailed art style, akin to Clamp's older series RG Veda, but many critics pointed out that scenes were often too cluttered and sometimes hard to read.

Lesley Aeschliman of the Seattle Post-Intelligencer wrote, "The only drawback to this series is the fact that a reader does need to have at least a little bit of knowledge of Japanese history in order to truly understand some of the concepts introduced".