Demon Slayer - Kimetsu No Yaiba

Long ago, during the Heian Era roughly a thousand years prior, a man named Muzan Kibutsuji sought immortality. Through forbidden means or a twist of fate, he became the first demon — an immortal being of immense power who could no longer walk in sunlight. He could create others by sharing his blood, transforming humans into demons who craved human flesh, possessed supernatural strength, rapid regeneration, and unique Blood Demon Arts (special powers varying by individual). Demons could only be truly slain by sunlight, Nichirin swords (special blades forged from a sunlight-absorbing alloy that changed color based on the wielder), or wisteria poison. Most retained fragments of their human memories and personalities, often twisted by their new existence. Muzan ruled over them as the Demon King, creating the elite Twelve Kizuki — Upper and Lower Ranks ranked by power and favor. In response to Muzan's emergence, the Ubuyashiki family — cursed by their blood connection to him — founded the Demon Slayer Corps around a millennium ago. Guided by a priest's counsel, they dedicated their lineage to eradicating demons in hopes of breaking their familial curse. The Corps operated in secrecy, recruiting those with talent and resolve, often orphans or survivors of demon attacks. Demon Slayers mastered Breathing Styles — advanced swordsmanship techniques that enhanced physical abilities by mimicking natural elements or phenomena (Water, Flame, Thunder, Wind, Stone, etc.). These derived from the original Sun Breathing, pioneered by the legendary swordsman Yoriichi Tsugikuni during the Sengoku era. Yoriichi nearly eradicated Muzan and his forces in what became known as the Golden Age, but Muzan survived, and the Corps endured centuries of attrition. By the early 20th century (Taishō period, roughly 1912–1926), the Corps faced a new generation of threats and heroes. Demons lurked in the night, preying on the unwary in rural mountains and bustling cities alike. The Ubuyashiki leader coordinated from the shadows, using a network of Kakushi (support members) for logistics, medicine, and cleanup. Throughout the era, Slayers confronted the Twelve Kizuki, awakened Demon Slayer Marks (enhancing power at the cost of shortened lifespan), and uncovered deeper truths about Breathing, family legacies, and the nature of good and evil. The conflict built toward a final, desperate stand against Muzan, where human perseverance, bonds of brotherhood, and the fleeting beauty of life clashed against immortal monstrosity. Wisteria flowers push demons away and hurt them when they get close.