Tales of Symphonia: Ratatosk no Kishi - Onshuu no Richter  

Tales of Symphonia: Knight of Ratatosk - Onshuu no Richter, Tales of Symphonia: Dawn of the New World - Onshuu no Richter, テイルズ オブ シンフォニア ―ラタトスクの騎士― 恩讐のリヒター

As a result of global catastrophes that occurred during the recent mana regeneration process, which took place two years ago. Researchers Richter and Aster are on a mission to locate the spirit Ratatosk, who appears to be the only one capable of restoring equilibrium in mana levels.