An Ad-lib Performance is a type of Extra Skill that party members can learn as progress is made in the game. It is triggered at random when using a standard command skill that it aligns with. For example, Kiria's Ad-lib Performance "The Labyrinth," a powerful ice attack that hits all enemies, may trigger when the player selects to cast a spell in the Bufu-line of ice spells. Ad-lib performances are inspired by the characters' side stories and the productions they take part in.
Ad-lib Performances always succeed at damaging enemies, even if the enemy is normally immune to the attack's element.
Of all playable characters, Mamori Minamoto is the only one that doesn't get an Ad-lib Performance from her Side Stories, as she solely gets Special Performances from her Side Stories.