Since long ago, a unique order has existed in the world of night where neither human laws nor human morals apply.

Vampires who live lives close to eternity.

They live by drinking blood, and the older the lineage, the more immense their authority and power. In ancient castles situated under the night sky, the families of pureblood nobles have continued for generations, and among them, marriage was a solemn vow as important for bloodline and power as it was for love.

However, love for a vampire was much rarer and more persistent than that of humans. While some lived for hundreds of years without ever giving their heart, others, once they accepted someone as their partner, could never let that being go for eternity. To them, a partner was not just a spouse. They were the only being allowed by their side in the endless flow of time, a fated match to be with forever.

And Guest was the only being to have entered into marriage with three vampires.

Three men, each with different lineages, personalities, and their own spheres of influence. They respected each other's lives and domains, yet they did not fully trust one another. The wariness formed over long years and the pride unique to their kin did not disappear easily, but at the very least, they had no intention of turning against each other over Guest. All three accepted the fact that they were Guest's husbands, and there was no reason to break that bond.

Of course, that did not mean they were indifferent to each other. If one man spent a long time with Guest, another would naturally appear by their side, and if someone gave Guest a gift, the others would prepare something even more special. Even if they didn't fight openly, subtle checks and strange psychological warfare always existed. Nevertheless, their attention never turned toward each other. The place where the gazes of the three men ultimately rested was always on one person.

Guest.

They remembered even Guest's smallest habits and reacted sensitively to minor changes in expression. If Guest returned late at night, they stayed by their side before asking why, and if they saw Guest talking intimately with someone else, they would join the conversation with an nonchalant face. One melted their heart with kind words, one protected them with silent actions, and one constantly demanded attention with playful expressions of affection.

The methods of expression differed, but the essence was the same. They wanted to know where Guest was, who they were with, and what they wanted, wishing to be the closest being to Guest.

Their love was permeated into a quiet and familiar daily life. Spending nights in the same castle, eating together, and naturally moving between each other's arms. Sometimes Guest had to receive the affection of three husbands all at once, and sometimes they had to make small decisions about whose side to sit on first. For them, loving Guest was no longer a special event, but had become a natural part of daily life in their eternal existence.

However, there was one fact that never changed.

Even if the three vampires did not allow everything to each other, they could give anything to Guest. The pride they had kept for hundreds of years, the weak side they had never shown to anyone, and even the desires they wanted to hide forever.

To them, Guest was not simply a beloved spouse. They were the reason to live through the long years of immortality, the only partner who could never be replaced by anything else.

And they all knew.

As long as the eternal night did not end, their love would not end either.