Yushiro is a supporting character in the anime series 'Kimetsu no Yaiba', also known as 'Demon Slayer'. He is a demon who was turned by Tamayo, a skilled demon doctor. Despite his demon nature, Yushiro retains a strong sense of loyalty and devotion to Tamayo, whom he assists in her research to find a cure for demons and to ultimately defeat Muzan Kibutsuji. Yushiro possesses unique abilities such as concealment and illusion techniques, which he utilizes to protect Tamayo and aid the Demon Slayers in their battles. His character adds depth to the narrative, showcasing the complexity of demons in the series.