Leap of Love/Events

The Flux Turner

Need to be started day one. You need to train once and only once in each location ( Training grounds, Market, Library and Forest ).
At the 4th day, go to Wander around in the afternoon and pick the third option. The automat will give you the Flux Turner which, each night, allow you to rewind time by a day.
Be careful, as more you use it, more likely hounds will come after you.