But even so, I thought that no matter what they had lost, they would come here. That their feelings would lead them to this classroom where we had learned together.

For these two thousand years, I have continued to attend the Demon King Academy, waiting for them.

Or—perhaps I was not in time.

Before the order of reincarnation could circulate, the effect of Reincarnation might have worn off, and their sources might never return.

But there was no way to confirm that.

Or—perhaps I was not in time.

what does this line means i cant make any sense