The ability of the blood to clot is severely reduced, causing the sufferer to bleed severely from even a slight injury. 👑Reader insert stories with your favorite Kimetsu no Yaiba characters. 👑The book contain s̲p̲o̲i̲l̲e̲r̲s̲ for anime fans. 👑Some chapters are 𝗻𝗼𝘁 𝗮𝗱𝘃𝗶𝘀𝗮𝗯𝗹𝗲 for readers under 18 years of age. Demon Slayer: Kimetsu no Yaiba is a Japanese manga series written and illustrated by Koyoharu Gotōge.