𝗲𝘃𝗲𝗿𝗺𝗼𝗿𝗲 - 𝐤𝐢𝐦𝐞𝐭𝐬𝐮 𝐧𝐨 𝐲𝐚𝐢𝐛𝐚 𝐱 𝐨𝐜

𝑪𝒉𝒂𝒑𝒕𝒆𝒓 𝑽𝑰𝑰: 𝑻𝒐 𝒃𝒆 𝒂 𝑫𝒆𝒎𝒐𝒏 𝑺𝒍𝒂𝒚𝒆𝒓

evermore

written by: flowercarnage

"𝗧𝗛𝗘 𝗗𝗘𝗠𝗢𝗡 𝗦𝗟𝗔𝗬𝗘𝗥 𝗖𝗢𝗥𝗣𝗦 has several hundred members. It is an organization unrecognized by the government, yet it has existed since ancient times—and we continue to hunt demons even today. But as for who leads the Demon Slayer Corps, that remains a mystery," Urokodaki explained to Tanjiro and Mayu, who listened intently to their new teacher.

He continued lecturing them about the existence of demons and their origins. That morning, Mayu and Tanjiro would begin their training to become swordsmen, with the hope of one day joining the Demon Slayer Corps themselves.

Both of them understood the trials that awaited. The path ahead was merciless, but if it meant avenging the families torn from them, they would walk it without hesitation.

Their very first trial was a descent down the mountain—one filled with countless hidden traps. Sharp knives, crushing logs, and snares lurked at every step. As expected, Mayu was the first to adapt. Day after day, she sharpened her instincts until, on the fourth morning, she finally slipped past every trap without a single misstep.

While Tanjiro continued struggling down the mountain, Mayu’s training was different—endless sword swings. First one hundred. Then five hundred. And finally, one thousand.

At first, she thought that Urokodaki was cruel to demand so much of her. But then she reminded herself: if she wanted to survive the Final Selection, she couldn’t just learn how to swing a blade—she had to endure wielding it for as long as it took to defeat a demon.

So, Mayu made her choice. She doubled the count. Even as her arms trembled, even when she could no longer feel them, she kept going. Pain no longer mattered. All that mattered was strength—strength that she needed as soon as possible.

She didn’t stop. Day after day, she swung her sword without rest, until the day Tanjiro was finally able to join her in the endless, grueling rhythm of strikes. Side by side, they endured the pain together.

From a distance, Urokodaki watched in silence. He rarely spoke to them, but whenever he noticed a mistake, he would step forward to correct their form with sharp precision—then leave them to continue. It was tiring but Mayu knew all of it is going to be worth it.

⋆☀︎.☁︎‎‎⋆.

Mayu spoke too soon. It felt like all those swings were useless. Somehow, Mayu ended up face to face with their teacher. Urokodaki had nothing but his bare hands, while Mayu clutched her sword with all the determination she had.

And yet… within seconds, she was flat on the ground. Thrown, flipped, tossed—like a ragdoll. No matter how many times she charged, the result was the same: dirt on her face and pain in her back. Not only that, Urokodaki warned them that if they ever broke their swords, he’d personally snap every bone in their bodies. Mayu wasn’t sure if he was joking… and Tanjiro definitely hoped he was.

Lying there groaning, Mayu thought miserably, Just who the hell is Mister Urokodaki? Her arms and legs ached so badly she wanted to cry. “I swear… my body isn’t going to survive this,” she muttered, glaring weakly at her teacher while still sprawled on the ground.

Evening came, and Mayu noticed a sleepy Tanjiro writing in his journal again. Ever since their training began, he had made it a habit to write while sitting beside Nezuko as she slept.

She watched the two of them quietly. Just months ago, they had been nothing more than an ordinary pair of siblings—the children of a humble coal burner. Mayu still couldn’t believe how quickly everything had changed.

Her train of thought was disrupted when she suddenly heard an unfamiliar voice echo inside her head.

“Don’t let the moon forget, but the sun must always rise again.”

Mayu froze, her eyes darting around the room. Tanjiro’s head was already drooping over his journal, and Nezuko lay peacefully in her box. The voice hadn’t come from either of them. It was something else—something older.

For the briefest moment, she saw a shadow in her mind—a tall man with flowing red hair, wearing the same hanafuda earrings that Tanjiro wore. It wasn’t Tanjiro, nor was it Tanjuro-san. She didn’t know him… or at least, she thought she didn’t.

The image faded as quickly as it appeared, leaving only silence.

Mayu shook her head, forcing a weak laugh. “Great. Now I’m hearing voices.” She continued stitching and fixing her haori, trying to shake off the strange unease creeping into her thoughts.

But deep down, she knew it wasn’t just her imagination.

𝗧𝗔𝗜𝗦𝗛𝗢 𝗦𝗘𝗖𝗥𝗘𝗧𝗦:

• mayu have a small birthmark on her nape shaped like a sun ☀︎

• mayu would sometimes help urokodaki on cooking while tanjiro focuses on training.

• she was able to master kie's recipes.

• because of that tanjiro cried when mayu cooked for him for the first time after his family's death.