Eruruu is the female protagonist, though there are other main female characters in the story. She was the first person Hakuoro meets when he wakes up after being found by her. She nurses Hakuoro back to health until he is strong enough to go walking outside, with much initial assistance provided by Eruruu and a walking stick. Later, she falls in love with Hakuoro. Eruruu has a forceful, but caring and gentle personality. She is named after a flower that only exists in the story. In the game and manga, she is often found displeased of her small breast size.