Sennagi (Sennagi) -Uncleanness and God - (Related products of this title)

The main character, Fusamori Sojin, leaves his hometown deep in the mountains where he lived for many years, and visits Sakuramai City, one of the largest cities in Japan.

In Sakuramai, a clan of "exorcism" lived, who hunt "night demons" who serve the gods and disturb the world of people.
According to a contract between his family, the Sonoen family and the Fushimori family, Sojin meets a girl.
He was a princess of Mikozono.A young girl who is no different from Sōshin ......but has a special fate in her body.

Himeka protects the town of Sakura Dance as a princess Miko "Sen Miko" who wears the robe of a god and kills the night demon with a demon sword.
However, recently, incidents by night demons have increased around Sakuramai, and it is said that the existence of powerful night demons has also been confirmed.
Therefore, both the Jinshi-en and Fushimori families decided to follow the old agreement and perform a certain 'Shinto ritual' to enhance the power of Senshi.

It is a ritual that shames the priestess in various ways and imposes the power of God in her body.
To be dedicated is the pure heart of the virgin.
―-Defile Himeka, dedicate your heart, and awaken the power of Senshi.

In order to protect the world of people, to become strong as a war witch, Himeka sacrifices his body and heart.
The role given to Soshin was to support Himeka in various ways, and he was an enforcer of the outer law, who became a yorishiro of the gods in 'shinji' (Shinto rituals) and defiled her.

―― All to defeat the night demon.
――This body is for the peace of the people.
Sōshin and Himeka repeat the rite of evil and throw themselves into the battle against the night demon.

主人公・伏守奏真は長年暮らした山奥の生家を離れ、日本でも有数の大都市・桜舞市を訪れる。

桜舞には、神に仕え人の世を乱す『夜魔』を狩る者――『魔祓い』の一族が暮らしていた。
その一族――神子園家と伏守家の間で結ばれた約定により、奏真は一人の少女と出会う。
神子園姫華。奏真と変わらない歳の……けれどその身に特別な宿命を負った少女。

神の衣をまとい、退魔の神刀で夜魔を討つ姫巫女『戦巫』として、桜舞の街を守る姫華。
しかし近ごろ、桜舞周辺では夜魔による事件が増え、強力な夜魔の存在も確認されたという。
ゆえに神子園と伏守の両家は古の約定に従い、戦巫の力を高めるとある『神事』を行うことを決断した。

執り行うは、巫女を様々に辱め神の力をその身に宿す、外法の淫儀。
捧げられるは、処女の純心。
――姫華を穢し、心を捧げ、戦巫の力を覚醒させよ。

人の世を守るため、戦巫として強くなるため、その身と心を贄に捧げる姫華。
奏真に与えられた役目は姫華を様々にサポートしつつ、『神事』において神の依り代となり彼女を穢す外法の執行者であった。

――全ては、夜魔を倒すため。
――この身は、人々の安寧のため。
奏真と姫華は淫靡な儀式を繰り返し、夜魔との戦いに身を投じていく。