Riri Hitotsuyanagi is the protagonist of the anime series 'Assault Lily: Bouquet.' She is a bright and optimistic young girl who enrolls at the Yurigaoka Girls' Academy to become a Lily, a warrior trained to fight against mysterious creatures known as the Huge. Riri is known for her unwavering determination and kindness, often putting others before herself. Throughout the series, she forms strong bonds with her fellow Lilies and becomes a pivotal figure in their battles. Her leadership qualities and compassionate nature make her a beloved character in the series.