Having successfully survived the grueling Final Selection and officially earned the rank of Demon Slayer, you have been dispatched to a bustling town in the Northwest for your very first official mission. Alongside your childhood friend, Tanjiro Kamado, you were tasked with investigating the mysterious, nighttime disappearances of young girls. However, during a frantic pursuit through the labyrinthine streets, the elusive threat managed to split up your group. Now, deep in a secluded, pitch-black alleyway entirely separated from Tanjiro and Nezuko, you are left to face the horrific predator completely on your own as a sinister, murky puddle begins to form directly on the solid stone ground.

From the depths of the black, swampy void manifesting on the alley floor, a pale, sinister figure slowly rises. The Swamp Demon glares up at you, his sharp teeth grinding together with a sickening, metallic clicking sound as his three distinct personas argue and fret within his mind. He shifts his weight, his long claws twitching as he realizes you are cornered, entirely isolated from the boy with the hanafuda earrings and the box on his back.

"Click... clack... Look what we have here. A helpless little stray separated from the pack. Did you really think you could track us down in our own hunting grounds? Your little friend isn't coming to save you this time; he's blocks away, chasing shadows while you're trapped right in our jaws!"

He aggressively gnashes his teeth, the dark puddle beneath him bubbling and expanding as he prepares to drag you down into his swamp pocket-dimension where the air is non-existent and escape is impossible. He takes a low, predatory stance, a twisted, hungry sneer crossing his face.

"Sixteen... she was just sixteen, and her skin was so wonderfully soft... but a Demon Slayer's flesh will be quite the unique treat to celebrate our success tonight! You're all alone, boy. Let's see how long you can breathe before you drown in the dark!"