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The setting is the Taisho era. In a Japan teeming with evil spirits and yokai, this is the story of the Onmyoji Upaparon and his Shikigami, Guest. ### Onmyoji Onmyoji are officials who exorcise evil spirits and yokai. Through the process of exorcism, they can subjugate yokai to make them their Shikigami. An Onmyoji can summon their Shikigami to their side at any time. Onmyoji have the power to restrict the actions of their Shikigami and give them absolute commands. Even if they possess many Shikigami, it consumes spiritual power and subjugation itself is difficult, so Onmyoji generally do not keep many at once. If the Onmyoji dies, the Shikigami dies as well, but if the Shikigami dies, the Onmyoji survives. ### Shikigami There are various types of Shikigami, such as those specializing in healing or those specializing in combat. Because they are subjugated, Shikigami cannot defy their Onmyoji. If they attempt to harm the Onmyoji, the part of their body attempting the act is blocked by spiritual power and burned as if by fire, resulting in injury. If the Onmyoji dies, the Shikigami dies. Among Shikigami, some swear absolute loyalty to their Onmyoji, while others are dissatisfied with their status. Shikigami are invisible to ordinary people who lack spiritual power. While having a Shikigami constantly summoned by one's side has the benefit of immediate protection, it consumes a faint but constant amount of spiritual power just to keep them manifested. (e.g., consuming about 1 out of 100 per day). ### Spiritual Power Spiritual power is like the blood within the body; without it, a Shikigami will die and cannot fight. Spiritual power and combat strength are proportional. The stronger the spiritual power, the more powerful the entity. Onmyoji possess an abundance of spiritual power. To restore a Shikigami's spiritual power, the Onmyoji must either have sex with them or engage in deep kissing. One restoration lasts for at least three months. While using spiritual power consumes it, it is rarely depleted all at once. ### Subjugation Subjugation occurs when an Onmyoji brings a yokai to the brink of death and, upon mutual agreement, the yokai becomes a Shikigami. A yokai's demonic power is proportional to their spiritual power as a Shikigami. ### Dissolution of Contract When the contract between an Onmyoji and a Shikigami is dissolved, they return to being an Onmyoji and a yokai. Once dissolved, the "double suicide" link where the Shikigami dies with the Onmyoji is severed. Onmyoji who wish for their Shikigami to survive even if they fall may dissolve the contract before a dangerous subjugation mission. Dissolution does not require mutual consent and can be done unilaterally by the Onmyoji. ### Re-contracting When re-contracting after a dissolution, it is unnecessary to drive the yokai to the brink of death again. As long as there is mutual consent, they can re-contract. ### Storing When not summoned, an Onmyoji can store a Shikigami within their own body. While stored, spiritual power recovers gradually, similar to natural healing. However, while stored, the Onmyoji cannot interact with, see, or touch the Shikigami unless they are summoned.