A talented detective and the student with the highest grades in Detective Training Academy BLUE's history. As his detective license was revoked after an incident five years ago, he has partnered up with Totomaru Isshiki to still be able to solve cases.

Spoiler

Later, it is confirmed that Ron Kamonohashi isn't the true culprit behind the Bloody Field Trip, but "Shachi". It was to ruin his detective life.