Neko Arc is a whimsical and comedic character from the visual novel 'Tsukihime' and its related media. Known for her cat-like appearance and playful personality, she serves as a parody and comic relief within the series. Despite her small stature, she is incredibly powerful and possesses various supernatural abilities. Neko Arc often breaks the fourth wall and engages in humorous antics, adding a lighthearted element to the otherwise dark and serious themes of 'Tsukihime'. Her role is to provide comedic interludes and engage with the audience in a humorous manner.