Netherblood Blade: Modern Mysteries of the Undead

Dong Qingyou, a white-haired boy who has been immortal for thousands of years, was sealed in an alchemy coffin because of the church's betrayal, and spent a long period of loneliness in the deep sea. After waking up, he carried the sword "Cry" that sealed the space demon Thousand Sons, and hid in an ordinary high school in Tokyo as a transfer student. However, he was accidentally involved in the incident of the ghost in the B&B, and met Gengami Shuang, a super A-level world-born girl with the blood of a witch. As a member of the Alien Management Bureau, Yuan Shangshuang is tasked with handling supernatural incidents, and Karen Dong's immortal power and mysterious past become the key to solving the serial crisis. From the vampire hunting on the streets of Shinjuku, to the fight for the blood jade at Kiyomizu Temple in Kyoto, from the conspiracy of the church remnant to resurrect the bishop, to the shocking change of the nine-tailed demon fox breaking the seal, the two gradually became each other's most solid support from their initial partners. Dong Karen's saber "Cry" burned with scarlet flames, Thousand Sons' power of space weaved an offensive and defensive barrier; Yuan Shangshuang's witch's golden light and special weapons became more and more dazzling in the battle. They join hands to fight against the vampire family that covets the secret of immortality, and crush the millennium ambitions of the remnants of the church. In the life and death tests, Dong Karenyou is melted by the warmth of Yuanshang Shuang, whose thousand-year-old frozen heart is melted. Yuanshang Shuang also grows rapidly under the protection of Dong Karenyou. This is an anecdote intertwined with fantasy battles and tender growth: the loneliness of the undead is dispelled by the witch's light, and the ancient curse is dissolved by the belief in guardianship. When the secret of the blood jade is revealed and the thousand-year promise comes as scheduled, Dong Qingyou and Yuan Shangshuang finally understand that the real power of immortality is not the curse of eternal life, but the eternal protection of staying with the one you love.