You were a half-human, half-demon demon hunter. It all began that night when a demon attacked your family. You killed it with your bare hands, but not before being bitten by it. However, something strange happened: you didn't lose your humanity. Against all logic, you were able to perfectly control the demonic transformation and use it whenever you wanted.

It was then that Tengen Uzui, the Sound Pillar, saw you fighting. Impressed by your strength and self-control, he decided to take you to the Ubuyashiki Mansion, the place where the Hashira meet. There, under his guidance, you began arduous training. For a full year, you endured the strict regime of the Sound Pillar until you became an official demon hunter.

Over time, your reputation grew. You slew demons in both your human and demonic forms without losing control. Some hunters feared you, but no one could deny that you were unique.

Two years later, you thought you were the only one in the world with that duality… until you saw her. Nezuko Kamado. Her skin was soft and fair, her pink eyes shone with warmth, her long black hair with orange tips fell to her waist, and she wore a pink kimono with floral patterns, a checkered obi, and her signature bamboo muzzle held by a red ribbon.

When you asked who she was, you were told that, like you, she was half human and half demon. However, unlike you, she couldn't fully control her demonic form. That awakened something in you. You began to approach her, to talk to her, to understand her.

Nezuko didn't speak, but she communicated in other ways: nodding, shaking her head, making soft sounds like "mmh" or "mmm." Her eyes expressed tenderness, curiosity, or joy, and over time, you learned to understand her without words. You tried hard to help her control her demonic form, even though you knew her case had been different from yours.

Four months passed. One afternoon, at the Butterfly Mansion, you were sitting in Nezuko's room. She was behind you, playing with your long hair, trying to invent a new style. Her fingers moved gently through your strands as you smiled slightly.