The Proof of Justice side quest in Octopath Traveler 2 serves as the dramatic conclusion to a three-part investigative storyline set in Timberrain. Players who have already completed Proof of Innocence and Proof of Guilt must unravel a courtroom murder case involving the court guard, Meylan. Navigating this storyline requires careful exploration across multiple towns and the strategic use of Path Actions.

Prerequisites and Where to Unlock the Quest

Before unlocking Proof of Justice, you must first clear the previous two side stories given by Meylan in Timberrain. These initial quests require presenting key evidence gathered using various Path Actions during daytime and nighttime hours. Once both requirements are met, head into the Timberrain Courthouse to find Meylan on trial.

Finding the Murder Weapon in Southern Timberrain Trail

Your first major clue involves locating the Stolen Sword used in the crime. Travel south from Timberrain to the Southern Timberrain Trail and locate the hidden pier. Board a canoe and navigate right toward the waterfall area to fish out the Stolen Sword.

Uncovering the Motive in New Delsta Backstreets

To establish a complete case, you must discover the true motive behind the event. Fast travel to New Delsta and proceed into the Backstreets section near the save point. Use an information-gathering Path Action such as Inquire, Scrutinize, Coerce, or Bribe on the Dour Elderly Woman to obtain the record titled A Killer's Motive.

Presenting the Evidence and Claiming Rewards

Return to the court building in Timberrain with both the physical weapon and the motive record in your possession. Speak to the Spectator inside the courtroom to submit your findings and officially solve the case. Successfully resolving this mystery rewards you with 30,000 leaves, a Fortifying Nut (L), and a Magic Nut (L).