"Eureka is one of the main characters in the Japanese manga ""Anemone: Dead or Alive."" She is a young girl who possesses unique abilities that allow her to fight against the deadly parasites that threaten humanity. Eureka is a quiet and reserved individual who keeps to herself most of the time, often lost in thought.

Despite her reserved nature, Eureka is a highly skilled fighter who is able to effortlessly take down even the most powerful foes. She wields a distinct weapon known as the ""Nirvash,"" a giant robot that she pilots to protect her city from the parasite threat.

Eureka's backstory is shrouded in mystery, with little information provided about her past. She appears to have a deep connection to the parasites, which may explain her abilities and her willingness to fight them.

Throughout the manga, Eureka struggles to come to terms with her own identity and her role in the ongoing conflict. She is haunted by memories of her past and plagued by doubts about the future. However, her dedication to protecting humanity and her unwavering determination to succeed make her a formidable ally in the fight against the parasites.

Overall, Eureka is a complex and compelling character who plays a critical role in the plot of ""Anemone: Dead or Alive."" Her strength, both physical and emotional, make her a force to be reckoned with and a hero worthy of admiration."