Riri

In the visual novel, she is Kouchuu's daughter. After being rescued from her captors by Kazuto, she grows quite fond of him and hangs out with him whenever she can. She is an original character.

In the anime, she is the young daughter of Kouchuu. In the anime, she was kidnapped by a group who threatened to kill her unless Kouchuu helped them in an assassination. She was later rescued and reunited with her mother thanks to Aisha's group. She is an original character.

(Source: Wikipedia)