Calendar
You can use calendar to check for important dates, holidays, as well as your date schedule.
When you click the Calendar icon, you will see the current month's view on the right screen. Icons on the calendar indicate that there will be special events on that dates. For example, Bag icon means either first day or last day of school term/semester. Star icon means the day you started a relationship with your girlfriend, etc.
You can click on each date to see your activities on that day on the left screen. If you choose your activity but don't open the game during that time, you will see ! icons in front of the activities. You can click 切替 button to switch left and right screen.
After switching screens, you can view what happen during that time by clicking the ! icon. After you are done watching, click 切替 to change back to the calendar view or click もどる to go back to the game screen.
When you have a date, you can choose to keep the date memory by clicking the little Lock icon and your can rewatch what happen during that day's date as many time as you want.