|Japanese Name||累沢 （るいさわ）|
|Manga Debut||Chapter 20|
|Anime Debut||Episode 19|
She is young woman, with average height and shoulder length straight dark hair. She wears a light-colored striped suit with darker shirt under it. She also has freckles around her nose and permanent closed eyes.
Ruisawa is cheerful, nice and is always smiling. Although extremely nice, she does not feel anything if a child ghoul is killed, since she doesn't consider ghouls humans and can say that while still smiling.
When Ken Kaneki and Touka Kirishima went to give false information about a ghoul at the CCG, Ruisawa was the one who spoke with them. After telling the false information, they asked her how the investigators fought the ghouls, since they were a lot stronger. Ruisawa said that she could not reveal that information, but said two strong investigators had come to their branch and killed the Mother ghoul and will soon find the Daughter ghoul as well. Touka said that must be a heart-breaking, to kill a child, but Ruisawa, still with a smile, told her it was not like that, since ghouls were not humans and since they will cause them trouble, it was natural for them to kill the ghouls. After that Touka and Kaneki left.
Power and AbilitiesEdit
As a human, she possesses a normal human's strength.
- In Episode 10, there is an unnamed cameo who closely resembles Ruisawa, except for her eyes and hair color.
- She finds Koutarou Amon handsome.