Harvest Moon: A Wonderful Life Special Edition

Story related. Cannot be missed

Each Chapter represents 1 year, which consists of 4 seasons of 10 days, for a total of 40 days per year/chapter. After you go to bed on Winter 10, a cut-scene will start to play that deals with the flow of time in Forget-Me-Not Valley. Once the cut-scene is over, your trophy will unlock.

There is literally nothing you have to do in order to progress the story besides finishing a year. Which is a blessing, because you will most likely finish everything related to the Platinum during Chapter 3. So instead of going through over 2 more years, you can simply sleep through the rest of the story. Or, keep playing normally, tending to your farm. It's up to you. Sleeping is much, much quicker though.