Hikari Takanashi is a lively and energetic vampire girl who attends Shibasaki High School in the anime series 'Demi-chan wa Kataritai'. Unlike traditional vampires, she only requires small amounts of blood, which she usually gets through blood packs. Hikari is known for her outgoing personality and playful nature, often teasing her friends and teachers. Despite her mischievous demeanor, she is caring and deeply values her friendships. Her role in the series is to highlight the everyday challenges and unique experiences of being a demi-human in a human world.