アルカナハート
The game's setting takes place in a fictional, somewhat futuristic Japan combined with fantasy elements. In the previous game, "Arcana Heart 2", a dimensional distortion occurred in the country's Kanto region, caused by the primordial being known as Angelia Avallone. This event came to be known as the "Great Kanto Incident". The international Holy Spirit Institutions suffered harshly after the "Great Kanto Incident", but restoration has begun and about two months have elapsed.