Jindō Kiriya operates as a high school detective within Tokyo's fictional Geso ward. He probes incidents involving individuals who acquire supernatural abilities via the "AICis" mobile application. His core duty is solving cases where these powers are misused for violence or selfish gain, resulting in disturbances and criminal acts. Jindō works with fellow detectives Fuuka Minase and Chiyo Izumi as part of a unit dedicated to these power-related incidents. One documented case saw him apprehend student Kouji Hirayushi, who exploited shape-shifting to impersonate others for access to restricted areas or information, exemplifying Jindō's role in identifying and stopping app power abusers.

Jindō's investigations persistently seek the origins of the AICis app and the consequences of its powers, especially the hidden costs or requirements tied to each ability. For example, Kouji Hirayushi's shape-shifting demanded detailed documentation of his target beforehand, revealing inherent limitations governing the powers. Jindō confronts users violating ethical boundaries, aiming to curb the escalating chaos from unchecked supernatural activities across the ward. His efforts contribute to a broader initiative restoring stability within the school city environment.

His character remains defined solely by his function within the detective group and his direct involvement in resolving AICis-linked supernatural cases.