In the Compendium, the following can be checked:
■ Album
View all characters, Collections, and equipment that have appeared in the game.
■ Synchro
Synchro is a feature that raises the stats of all unlocked characters when you obtain certain characters or Collections.
Each Synchro has phases, and raising it to a higher phase increases its stat bonuses.
Synchro phases can be raised by meeting the required character rarities or Collection evolution stages.
■ Side Stories
Watch stories unlocked through events and Trust Missions.
Only cleared stories can be viewed.