The best way

Exploration Stage: Garden of Oblivion
From: Juliette
Description: Dear friends, this world would be a kinder place if we settled things through discussion and music instead of fighting and using weapons. Look for "Harmonica's Pistol." I beg your pardon? There are more funny miracles happening in this city.
Completed: Hmmm ...... why did they think a harmonica pistol wouldn't look dangerous? Anyway, I hope this solves the problem of the mayor and the monster.