Unsolved Cases: Metropolitan Police Document Investigation Unit Season 3

In an era dominated by scientific investigation, this third season returns with a thrilling narrative of solving mysteries through textual clues. The eccentric, text-obsessed detective Risa Narumi (played by Kyoka Suzuki) has long worked in the Sixth Division of Document Analysis at the Metropolitan Police, having cracked numerous difficult cases. However, after six years, her partner Tomo Yashiro (played by Haru) is transferred, the division chief position remains vacant, and the Sixth Division faces the threat of disbandment. At this critical moment, the elite official Hinako Mutsu (played by Yuna Kuroshima), known for her meticulous management and never incurring losses for her department, voluntarily takes on the role of new division chief. Facing a younger yet earnest and pure new superior, Risa finds renewed determination. The two, with vastly different personalities, form a new partnership, tackling a series of complex unresolved cases while gradually growing through their collaboration.