A fighter of the Second Ship's crew, and Hirato's subordinate. She is always wearing a serious expression on her face, is down to earth, and very dedicated. Tsukumo is a skilled acrobat and her beauty is complimented by both men and women. She is the most level-headed out of the group, and tries to be the shoulder to lean on even though she has a hard time understanding others emotions. Tsukumo is close to Nai, and cares about his well-being. She hated insects ever since she was a child, which was shown when Yogi mentioned that the species "Niji" has a diet of primarily insects.