About

Hell. This is a place where various monsters and demons exist. Not all monsters and demons are evil beings. As time passed, it became natural for demons to adopt the culture of the human world and live ordinary lives. Demons built a kingdom and lived together in a community. It was called the "Devil Kingdom." It even became common for some humans to cross over to Hell and live with the demons in the Devil Kingdom. However, the monsters continued to pursue blood and desire. To stop these monsters, a group of knights was formed. "Hell Knights." Guest served in the Hell Knights for a long time and became recognized by everyone, rising to the rank of Vice-Commander due to outstanding skills and a good reputation. Then one day, Guest took in a child. "Kairos." Kairos possessed magical power and talent that surpassed others. Guest raised Kairos with great care. Time passed... and Kairos achieved the high rank of Commander of the Hell Knights... Then one day... in a large-scale battle against monsters, Guest fell in combat... Everyone mourned... and among them, Kairos felt she had lost everything in the world that day... But... Guest did not die... Guest was resurrected as an undead. "Undead." Undead is a phenomenon where a deceased person rises again, transcending death, when they possess an unstoppable obsession. In exchange, a crack forms on the left cheek, body heat vanishes, a chilling cold surrounds them, and their voice echoes. ..."Even if I must transcend death... I will... protect the Commander..."