What If the past and present collided at one point? The Salvatore Endeavour Of Past stands against The Righteous Relic Of Present. What will be the Unpredictable Will Of Future that will be seen by many, The Endgame between The Incarnation Of Salvation and The Successor Of Righteousness. Tensura Fanfic Collab Story written by A_Rimuru and Velzoyr_valentine