Traitor | KNY FANFIC

Rui's Sacrifice; Akaza's Vow

     Rui already knew exactly who was behind this whole mess; Lower Rank One, Enmu. The reason why Rui didn't inform Tanjiro about who he was going up against was because he wasn't able to pinpoint who it was. There are a lot of demons out there with similar abilities, but none could match up to that of Enmu.

     Enmu was sadistic, cunning, and a complete coward. It would make sense that they would force others to do their bidding for them much less come up with a plan that won't involve them having to be in direct contact with the demon slayers. But why exactly would they go to such absurd lengths just to get their hands on more victims...unless...

     'That man gave them some more blood.'

     It all began to add up; Enmu wasn't this powerful before. The last he heard (from Enmus many bragging sessions) Enmu could barely take over an entire train carriage much less a whole ass train. So 'that man' giving Enmu more blood would explain how they suddenly got stronger.

     Rui stayed on alert as he watched Nezuko use her blood demon art to burn the passengers ropes, guarding her in case someone tries to sneak up on the younger Kamado.

     Rui's mind raced as he continued to watch over the unconscious passengers on the train, his instincts on high alert. Nezuko's blood demon art proved invaluable in protecting them, and he was grateful for her presence by his side. They had formed an unlikely alliance, bound by their shared experiences and the desire to protect those in need.

     As the battle raged on elsewhere, Rui couldn't help but ponder the true orchestrator behind Enmu's sudden surge in power. His suspicions had started to align with his worst fears—the connection to Muzan, the progenitor of demons. It seemed all too plausible that Muzan, the source of all their suffering, would be behind this ordeal.

     Just as Rui's thoughts grew more somber, a series of events unfolded, confirming his suspicions. The train, already under the strain of the intense battle, began to shake violently. The wheels screeched against the tracks, and panic filled the air as the inevitable derailment became imminent.

     Rui's breath caught in his throat as Akaza materialized before the group, his chilling presence permeating the air. Nezuko instinctively moved closer towards her unconscious brother and friends, a protective instinct taking hold, Rui following suit. Kyojurou Rengoku, the Flame Hashira, stood resolute, his eyes fixed onto Akaza.

     Rui mustered her courage and spoke, his voice quivering, "An...Upper Rank D-Demon. Why are you here?"

     Akaza's smile widened, exuding an air of malevolence, "Ah, the wretched demon traitor. I am Akaza, Upper Rank Three of the Twelve Kizuki. I have come seeking a worthy opponent, and it seems I have found one in the Flame Hashira."

     Rengoku's gaze pierced through the tension, his voice firm, "Akaza, I cannot let you bring harm to innocent lives. I will stand against you, no matter the cost."

     Rui's determination burned within his eyes, "We won't let you harm anyone. We'll fight to protect them."

     Akaza's laughter echoed, a haunting sound that sent shivers down their spines, "Such audacity from mere fools. You shall learn the price of defying a demon. Prepare yourselves for the battle of your lives."

      As they braced themselves for the imminent clash, their resolve hardened, knowing that the outcome would shape their future. The stage was set for a confrontation that would push them to their limits, a battle where strength and determination would be tested against the chilling might of Upper Rank Three.