Trapped in a Summoning Space for 100,000 Years from the Start

When he opened his eyes again, he found himself in a space called the Summoning Space. In theory, time and space were frozen there.

He would neither age nor die, and hunger and thirst would never trouble him.

But how could he hold on to his sense of self through this endless stretch of time?

The only skill on his summoning panel was "Meditation"...