Rabi-Ribi: Cicini's Halloween!

Summary pulled directly from Steam - Some text may only be applicable to Steam platform

Cicini wants to get everyone hyped for Halloween!
With some help, she has opened up a spooky new area with a mini side-story!
The area features new music, new enemies and a whole new boss fight, as well as other surprises.
So come on down (up?) to the graveyard and lets bring some trick-or-treating to Rabi Rabi Island!
...
Wait, was it supposed to be a secret?
Let's find out in this special free DLC!

*The Halloween side story will be auto-added after certain items and town members have been found.