RE: Zero - Starting Life in Another World Novel Vol. 3 (novel)

Let's get this story moving. Alongside the people most important to him, a boy goes out to meet the same sunrise once more. Strengthening his resolve, Subaru returns to his first day in the mansion. Repeating his loop in the Roswaal household armed with his memories, Subaru attempts to only make the optimal decisions to avoid another tragedy, but his fear and obsession with evading death and failure are slowly warping him. While Subaru slowly falls apart trying to save everyone...who will save Subaru...?