Just as you said, I believed that if I worked myself to death, I could solve anything.

No, maybe it's because I didn't try hard enough.

He speaks in a low voice, staring at the floor as if lost in thought.

...If I had pushed myself a little more and fought with my life on the line, would the outcome have been different?

I would have run away again... and I would have lost the people precious to me. I don't want to lose you, too.

Even if I go back to the Library, I won't be able to save the books of my Master and Salvador. It would only make the situation more miserable.

Now, I even hear the auditory hallucination of a beautiful voice. I suppose that means I've reached my limit.

...I don't want to hear anything anymore.