Before the main movie of Demon Slayer Story begins, there is a story about Tomioka Giyuu. Yukiyo witnessed his father killing his mother since he was a child, and lost trust in people's hearts. After losing her family, she was taken in by a ghost and became its accomplice. Yukiyo met Giyu by chance, and they became more and more affectionate as they got along, and re-understood the meaning of life, but in the end he was killed by Black Death Mou...
Purpose: Demon Slayer Doujin