Shiki Natsume is a prominent character in the anime series 'Togainu no Chi'. He is known for his enigmatic presence and formidable combat skills. As a mysterious and powerful figure, Shiki plays a crucial role in the brutal tournament known as Igura, which takes place in a dystopian Tokyo. His motivations are shrouded in secrecy, but he often appears as an antagonist to the series' protagonist, Akira. Shiki's cold demeanor and exceptional fighting prowess make him a formidable adversary and a key player in the unfolding drama.