提亚拉之泪外传：阿瓦隆之谜
EP and Substitution System (The Mystery of Avalon)
A combat system that limits the duration team members can stay on the battlefield continuously.
Tiara's Tears Side Story: The Mystery of Avalon
"Tiara Gaiden: The Mystery of Avalon" is a spin-off of "The Land of the Crown," telling the story of the mutation in Avalon City after the establishment of the New Kingdom, and adds an EP mechanic in the tactical chess section that requires rotating team members.