Synchro

Synchro is a gameplay mechanic in Slime Kingdom.

Over time, party members get close to each other, and also learn from other party members battling. After bonding enough, they obtain Synchro skills, which affect battles. Sometimes, a Synergy Charge attack can occur. They may also temporarily fuse with other characters, though this is not known to happen.

The game introduces Synchro Skills to the player through a tutorial prompt after the first one is learned during gameplay.