Natsuka, No. 28 debuted in the 3rd stage 4th match trying to take out Minato on Higa's orders so she and her Ashikabi could recieve aid escaping the Sekirei Plan. Kaho and her Ashikabi protected Minato, forcing her to face the lancer. However, this proved to be a difficult challenge for her, even as she fought alongside Sekirei No 75. Natsuka is later terminated by the MBI card her Ashikabi was carrying, which created a force field severing the connection between her and her Ashikabi, for failing to obtain a Jinki in the 4th match (Manga Chap. 132).
She refuses to give up even against a stronger opponent.