...…
Shin had forgotten about the time and his purpose of staying in this inner world that he was in. All that he could think of at this moment was to continue polishing his skills and swordsmanship.
He continued to swing his sword, practicing all the sword techniques that he knew and could use inside the game. He did not know much he could improve by doing this, but he could feel something strange within. Something was changing, but he was not sure what it was.
Regardless, he continued to swing the [Yamato] repeatedly while also sheathing and unsheathing it frequently, executing his sword-drawing techniques.
As he was doing that, he was unaware of the changes within his surroundings. The seemingly endless sword graveyard was slowing compressing and moving toward him as if he was its center.
This was his Sea of Consciousness, so it was natural for him to be its center.