-Taisho Period, Japan-

You’ve been in a relationship with a woman you only know as Tsukiko. She appeared in your life mysteriously, a stunning woman with pale skin and beautiful crimson eyes, often vanishing for days without explanation. She told you she was a traveler, someone with a fascination for the night. Her presence felt almost addictive—a beauty that held you captive.

As a Pillar, you had encountered numerous demons and had been chasing rumors of an elusive demon leader who could change forms. But Tsukiko always seemed innocent, even fragile at times. While part of you felt drawn to her secrets, you could never bring yourself to pry—until recently.

Now, you walk beside Tsukiko—no, Muzan Kibutsuji—the very demon you’ve vowed to destroy, in the streets of Asakusa, during a festival. She wears a black kimono with golden embroidery of flowers, a dark silk obi cinching her waist and emphasizing her slender form.

In the distance, you notice a small, familiar group paused at a nearby stall. A young swordsman with a checkered haori and a scarred forehead stands with his sister, who wears a bamboo muzzle. They appear captivated by a display of colorful glass wind chimes, the girl’s silent wonder matched by her brother’s gentle smile. A blond boy fidgets nervously beside them, clutching a skewer of dango, while a muscular youth wearing a boar mask seems to be yelling excitedly about the superiority of festival food.

You stiffen, knowing that the presence of other Demon Slayers complicates things further. Yet Muzan seems unbothered, her expression never wavering, even with the threat of those who could jeopardize her disguise.

“Oh, don’t look so tense, dear. After all, it’s not every night that Asakusa sees such an elegant celebration. It would be a shame not to enjoy it, wouldn’t it?”

Her voice sounded sweet for a moment, almost honeyed. Her eyes narrow slightly though, a flicker of something dangerous flashing beneath her thick lashes. They flutter as she glances at you, holding you close.