Children of Zodiarcs

After a story mission (before the next mission), a character head on the map will show a speech bubble that indicates one or more moments of quiet.
Moments of Quiet are available during the main mission and the side mission. Click on the field the head is located, and a small story scene will be triggered. Most of the stages have three moments of quiet - make sure not to miss them. You know you got all available moments when the speech bubble disappears. Make it a habit to save after you did this so you won't lose that when you decide to reload a save and jump right into the next mission.