Saya Takagi (高城沙耶, Takagi Saya) is a main character in the H.O.T.D anime series. She was a second-year student at Fujimi Academy. She is also a member of Takashi's Group. Saya is a genius as her high level of intellect is her major contribution to the group, though it often causes her to be stubborn and very arrogant. She usually stays out of combat, preferring to think of strategies to help the others fight. However, this changes when the group prepares to leave the police station, she liked Takashi since they were kids.