Keiji Fujiwara (藤原・啓治 Fujiwara Keiji) is one of the two deuteragonists of P.H.A.S.E. Season 1 and P.H.A.S.E. Season 2.
Like most other incarnations of Keiji, Fujiwara has white hair and turquoise eyes. He is of average build, and stands slightly taller than friends Kazuma and Jiyu.
Keiji is confident in his abilities as an esper combatant, and puts his faith in Jiyu as they work together in battle. He trusts his plans above all, and this is due to his genius IQ of 170. Although it does give him an ego, it also puts a certain degree of responsibility for him to carry. Keiji tends to mask his emotions with his jokes and erratical behavior, but cares for his comrades inside. He has a habit of keeping too much information withheld from his friends, primarily due to forgetfulness. This often earns him retaliation from Jiyu and Kazuma.