In the world of sleuthing, Keiichirou Nagumo"s name is instantly recognized. During his high‑school years he earned a reputation as a prodigy, solving mysteries that stumped even the police. Those days have faded—at least according to gossip. Yet one day an unanticipated visitor stormed into his office: Mashiro, a spirited high‑schooler who insists on becoming his new aide.
Keiichirou attempts to dismiss her, but Mashiro refuses to back down. She is resolute in pursuing a detective career and demonstrates her value by introducing cutting‑edge tech while offering fresh insights into his practice. Consequently, Keiichirou hires Mashiro as assistant and steps into a new phase of his profession—one in which he continually marvels at the ingenuity of today"s detective cohort. Even as cases grow increasingly complex, his confidence in her sharp mind only deepens today.
