Uncertain Evidence

Exploration Stage: Mural House
From: Yuri
Description: It was probably the melody that Orestes left behind that influenced the people of the city. I need to know why he entrusted me with that performance and what he was doing in the city. Let's find his diary.
Completed: It is rude to read other people's diaries, and Orestes has reminded me in his letter not to mention the diary... but since these situations are occurring, it is unavoidable. There may be descriptions left in the diary that will explain why the phenomenon is occurring in the city.