Hana Katsuragi is a central character in the anime series 'Seikon no Qwaser.' She is a student at St. Mihailov Academy and serves as the personal assistant to Alexander 'Sasha' Nikolaevich Hell. Known for her devotion and loyalty, Hana plays a significant role in supporting Sasha on his quest as a Qwaser. She possesses a strong will and determination, which often puts her in challenging situations, yet she remains steadfast. Her character is pivotal in the series, providing emotional depth and development, as well as a connection to the series' supernatural elements.