Saiki Kusuo[]
An old acquaintance of Saiki's and one the only people who suspects Kusuo as an esper. When Touma confronted Kusuo about the incident at their old grade school, Kusuo was hesitant so he petrified Touma first. Then, he tried to change the course of the story by going back to the past the day before Kusuo rampaged on the grade school. He then went back to the current time he was originally in and remove the petrification on Touma. He then decided to tell Touma about his powers. Thus, Touma is the 3rd person in the PK Academy to know that he is a psychic.
Teruhashi Kokomi[]
Like the common expression of Kokominzu, Touma had this first offu when he met Teruhashi and much to Kusuo's amazement, for the first time too all of the flooding words in Touma's mind disappeared at the image of Kokomi.
Nendou Riki[]
Touma isn't compatible with Nendou as he can't reason with him. When he had a conversation with Nendou, it was as if Touma lost his wits but it's not because he was scared but because all of his inquiries and intimating words don't affect Nendou.
Kaidou Shun[]
Touma can easily penetrate the minds of the likes of Kaidou and he thinks Kaidou is an easy man to use against Kusuo.
Takashi[]
Takashi bullied him in pre-school.
Aiura Mikoto and Toritsuka Reita[]
Touma thinks lowly of Aiura and Toritsuka; even refering them to monkeys. Eventually, they both accepted him as one of the Psychic Kids.
Saiki Kurumi[]
Touma considers her a truly kindhearted individual.