Reiko and Manami are members of the White Knights. They are not ranked as highly as Kana Shiraishi or Rin Shiragiku who appear to have the same rank as fellow White Knight Misumi. Both girls are members of the school swim team with Kobayashi as its captain who holds a grudge against her fellow team member named Misumi. After they were probed by Alien Tendrils by Miyu and E.T.A.I. due to their strength. Manami is Reiko's lackey and follows her lead. They were seen trying to defend Miyu Shiratori from being captured. Reiko has fairly spiky reddish-brown hair tied in a ponytail off to the side of her head, while Manami has light brown hair which reaches a little past her shoulders. Both girls wear the white dress that the White Knights wear, although Reiko wears green sweatbands on her wrists and brown knee-high boots while Manami wears white knee-high socks and loafers. Both are beautiful yet arrogant.