Ron Kamonohashi's Forbidden Deductions

Once celebrated as the finest student ever to pass through the elite Detective Training Academy BLUE, Ron Kamonohashi has spent the last five years shut away after being expelled. His downfall traces back to a murder case during his time at the academy—an incident that nearly cost him his life and left him strictly prohibited from working as a detective.

That isolation is disrupted when Metropolitan Police detective Totomaru Isshiki tracks Ron down for help with a months-old case that has gone cold. Ron reluctantly lends his razor-sharp instincts and identifies the culprit in under a day, but his talent comes with a disturbing complication: a mysterious condition that can put the people around him in mortal danger. When Totomaru manages to prevent a tragedy Ron inadvertently sets in motion, the two form an uneasy partnership—solving case after case while BLUE’s agents close in, determined to learn whether their former prodigy has returned to investigations.