Tsukihime is a visual novel developed by Type-Moon, first released in 2000. The story follows Shiki Tohno, a high school student with a mysterious past and the ability to see 'death lines' on objects and living things. He becomes entangled with supernatural events and a vampire named Arcueid Brunestud. Tsukihime is well-known for its intricate plot, deep character development, and has spawned various adaptations, including an anime and a manga.