Assist Synchronize (同期アシスト, Dōki ashisuto) or simply Assist Synch, is a type of Support Ability.
With this Support Ability equipped, using any healing, restorative magicks, abilities or items on a ally will increases both their Synch to Max. The effects lasts as long as the actions.
- Similar to the Synch system in "The World Ends With You", the leader with his partner will have Synch. They are only improvable up to 100% if given some yummy foods and beverages.