1._The first night ends.
2._At the beginning of the second day, you will find the "Heart Key" on the table at Amber's house.
3._With it you can walk through the “Heart-shaped Door” on the wall.
4._Entering the house, you will find the Event Gallery.
5._Some events can be replayed, while others will require "Dream Drops".
6._You can buy them with Venus or find where the events occurred. (Some are owned by monsters.)
7._To unlock the events in the gallery you will have to open your inventory and use the "Dream Drops". (Note: Once used, the "Dream Drops" will disappear from the inventory and the event will be permanently unlocked.)