Noriko Sato was an Index reject with ties to the Yakuza.
History
Noriko Sato was on S.H.I.E.L.D.'s Index because it was believed that she had psychic powers. Though she had an IQ over 200 and ran circles around her interviewing agents, ultimately, she was rejected from the Index.
Phil Coulson decided that the Clairvoyant may be a reject from the Index, so he and John Garrett went to Ball State University in Muncie, Indiana to see if she was the suspect, since she was a junior there.
Before they got there, they were called to assist Felix Blake against Deathlok.[1]