Mahiro Atori stands among five guardians sworn to protect Tamaki Kasuga, the Tamayori Princess. At 18 years old, he possesses purple hair and teal eyes that flash gold during power awakenings. His 157cm stature fuels persistent self-consciousness, frequently causing others to mistake him for an elementary schooler—a misperception that sparks fiery outbursts when mentioned.

Typically loud, energetic, and immature, Mahiro’s quick temper drives him to voice opinions freely, often targeting Takuma Onizaki after Tamaki’s upsetting remarks; he rigidly avoids physical confrontation with females. Beneath this brash exterior surfaces solemn depth during crises. He passionately indulges in motorcycles, fried noodle rolls, and admiring women with prominent physiques. Protective feelings toward Tamaki emerge, marked by visible sorrow as he recognizes her deeper bond with Takuma, yet he ultimately concedes their relationship, accepting Takuma as her destined partner.

Descended from the crow lineage, Mahiro commands wind, unleashing "Gittora" to generate cyclones or tornadoes that devastate enemy groups. In battle, he shapes wind into blade-like formations and executes agile high jumps. This power binds him to a heritage of sacrifice—the Atori line faced ritual offering to sustain Onikirimaru’s seal, though this duty later transfers to Tamaki. Initial resentment over being viewed as expendable strains his early dynamic with her, but witnessing her genuine care for the guardians’ safety fosters mutual loyalty. Betrayals within the group, particularly by Shinji Inukai and Suguru Oomi, wound him deeply. Occasional insights into Tamayori Princess traditions lend him an enigmatic air among peers.