The central protagonist who becomes entangled in the conflict between magic and science after befriending Arisa Meigo. He protects her from magical factions and ultimately uses his Imagine Breaker to help Shutaura recover her memories and stop the crisis.
They meet to share intelligence regarding Arisa's Saint classification and magical threats.
Touma physically confronts Shutaura at the climax to stop her from sacrificing Arisa.
Friends who coordinate efforts, with Mikoto assisting Touma during the climax.
Casual acquaintances who grow closer as Touma protects Arisa from magical factions.