Eisen lived through this memory intensely. For quite some time, he even had to feel what it was like to be entrapped there fully. Just sitting there, unable to move, unable to see or hear anything, for days at a time. Eisen knew that this was sometimes seen akin to torture to be left alone, deprived of one's senses completely. Unable to know how much time has passed, hallucinating shapes or certain beings appearing in the space in front of you. But somehow, the former Eisen was able to just let it all happen, for whatever reason.
He hung there, sometimes for a week or two at a time without any influx of anything. He wasn't even given food. But somehow, he was able to survive without issues.