Ena Hoshijiro is a central character in the anime series 'Sidonia no Kishi' (Knights of Sidonia). She is a talented Garde pilot known for her calm demeanor and impressive skills in battle. Hoshijiro plays a crucial role in defending the Sidonia spaceship against the alien threat known as the Gauna. Her character is both mysterious and enigmatic, often showing a deep connection with the protagonist, Nagate Tanikaze. Throughout the series, her interactions and evolving relationship with Nagate add depth to the storyline, making her an integral part of the series' emotional core.