My Wife is an Evil Dragon

Xia Li, a former hero of another world, transmigrates back to Earth after a three-year epic battle with the Silver Dragon Queen Lucia Sivana. He returns to his old, rusty apartment door, still holding the Demon Repelling Sword from the other world. The time flow between worlds differs, leaving him missing for only one week on Earth. Still clad in medieval-style clothes, he blends back into his life as a recent unemployed graduate.

Meanwhile, Lucia Sivana, the fearsome Silver Dragon Queen who fought Xia Li to a standstill, also transmigrates to Earth. She arrives in a weakened, human form—a teenage girl with black hair and brown eyes, stripped of all magical abilities. Lost and confused, she wanders into a convenience store in search of food. Mistaking the world for a dangerous unknown, she tries to steal a loaf of bread but bumps into the glass door, calling the clear barrier "powerful defensive magic."

Xia Li enters the same convenience store. Spotting the familiar figure of his nemesis in a reduced state, he recognizes her immediately. Though surprised, he is amused by her failed theft. Lucia is wary and hostile, unable to use her dragon flame or magic. Xia Li pays for her bread and mediates with the store clerk, claiming she is his younger sister with a brain condition. To teach her modern survival, he purchases a kitchen knife and a bath towel for her, which she immediately uses as a weapon and cloak.

As they leave the store, Xia Li intends to guide Lucia to the police station for help, assuming modern society will handle her. However, he quickly realizes the danger: Lucia has no identification, and her strange behavior would trigger an investigation. Her mention of him as her only connection could expose both as untraceable individuals, leading to accusations of human trafficking. Xia Li is forced to intervene. He proposes a temporary truce, offering to take her home instead of letting her be caught.

Lucia suspects his motives, thinking he wants to exploit her dragon bloodline to produce dragon-human hybrids. Xia Li clarifies he is a dragon slayer, not a dragon knight, and has no such interest. With her magic gone and unable to survive alone, Lucia reluctantly agrees to the truce. She demands food and safety; he demands she refrains from violence. They both swear an oath, binding their temporary alliance.

Xia Li decides to keep Lucia at his home for now, both to prevent her from causing chaos in the human world and to find a way to send her back to their original world. He uses a gold coin from Lucia to cover expenses, recognizing its value. The story sets up their uneasy cohabitation, where a former hero and an evil dragon must navigate modern Earth while dealing with their lost past and uncertain future. The summary ends with them establishing a fragile peace, focusing on survival and adaptation rather than endless conflict.