Seiji Minamoto

Seiji Minamoto serves as a detective in the First Investigation Unit of Machiyama Police Station, sharing the same police academy graduating class as Seiko Fuji. Despite finishing at the bottom of his class academically, he possesses a natural-born gift for instantly reading people's hearts, earning him the reputation of an 'interrogation genius' within the force. Recognizable by his trademark naturally curly hair, he and Fuji engage in constant banter and playful bickering in everyday life, yet the moment he steps onto a crime scene, he calmly dismantles suspects' defenses and provides crucial support—making him an indispensable elite detective throughout the story.