Reiji Kido is an antisocial transfer student of St. Hermelin High School who rarely shows up for class. It is later revealed if he is picked as a party member that he is the son of Kandori's father and his mistress. He blames his half-brother Takahisa Kandori for how his life has turned out and believes that the latter must die. To this end, Reiji skulks around the SEBEC facility, waiting for a chance to confront Kandori. Despite his brusque tendencies, many girls of St. Hermelin take quite a shine to him. When not wandering the streets, Reiji often practices magic tricks with playing cards in his spare time.