This is an optional area. However, there is a few things in particular about this town is that there is old man in the INN who can tell you about your game progress and bestiary list. 

Chests (1):

• Shuriken

Talk to a girl to trigger a small scene. Talk to another girl in INN to watch her dance. "And there is a Magic Key shop available here. There is an old man inside INN who can show you your bestiary and achievements.

Go to (1) the Magic Key shop, inside to the right wall is a hidden passageway and behind the counter is a chest containing Shuriken; the chest is hardly visible.