When a Vampire Enters the ABO World

Sutang is a vampire who transmigrates into an interstellar ABO world, only to differentiate as an Omega with no fangs. Starving and vulnerable, he tracks a man with exceptionally delicious blood, eventually discovering that the man, General Xi Chenyi, is a high-ranking Alpha. Sutang begins sneaking into Xi Chenyi’s home at night to feed on his blood, believing he is undetected. However, Xi Chenyi is aware of the intruder from the start and secretly allows the feeding, finding the vampire’s presence endearing. As their relationship develops, Xi Chenyi helps Sutang integrate into society, registering him as a citizen and enrolling him in university. The dynamic between them shifts from predator and prey to a complex bond, complicated by the societal pressures of the ABO hierarchy and Xi Chenyi’s impending forced pairing due to his age.

The central conflict arises when rumors spread that Xi Chenyi is engaged to an Omega celebrity, Cheng Yuzhen. Believing he has lost his chance and that Xi Chenyi will soon marry another, Sutang attempts to move on. He goes on a date with another Alpha, which triggers a jealous and furious reaction from Xi Chenyi. Xi Chenyi confronts Sutang, revealing that the engagement is a staged media fabrication arranged by his family, which he has been resisting. He publicly discredits Cheng Yuzhen to protect his future partner and confesses his true feelings, explaining that he planned the entire public pairing event as a cover to confess to Sutang in front of witnesses. Despite this, Sutang, still insecure and believing he is unworthy, runs away on the day of the official ceremony. Xi Chenyi tracks him down, and after a heartfelt reconciliation where he reaffirms his commitment, Sutang accepts his love. They begin living together, and Xi Chenyi provides Sutang with stored blood to sustain him, solidifying their domestic life.

The story takes a tragic turn when war breaks out between the Federation and the insect race. Xi Chenyi, serving as a general, volunteers for the front lines despite his desire to stay with Sutang. Before departing, he promises to return home. Sutang waits anxiously, sending him care packages and messages. The turning point occurs when Sutang receives emergency news that Xi Chenyi is critically injured. He rushes to the medical ship, only to find Xi Chenyi on the brink of death after sacrificing himself to save his squad from an insect ambush. Surrounded by thousands of enemies, Xi Chenyi suffered fatal injuries. In a desperate act, Sutang offers his own vampire blood to save Xi Chenyi’s life, draining himself to the point of near-death. This act of self-sacrifice triggers a temporal anomaly or dream-like state where Sutang relives their meeting, ultimately leading to a collapse of the current reality.

In the aftermath, the narrative shifts to an extra perspective from Xi Chenyi, revealing his internal thoughts and the depth of his devotion. He recounts how he tolerated Sutang’s presence, protected him from detection, and planned his life around him. The story concludes with Xi Chenyi waking up in a hospital bed, having survived the injuries, with Sutang resting beside him. The final scene shows the couple reunited, with Xi Chenyi proposing again in a public setting, surrounded by fans and well-wishers. The epilogue confirms their happy ending, with the two married and living together, having overcome the threats of war, societal expectation, and death. The narrative closes with a forum-style post celebrating their union, highlighting the public’s affection for the couple and the resolution of their romantic and personal struggles.