Symmetry Room (シンメトリー・ルーム Shinmetorī Rūmu) is a short story that is part of an anthology of short stories based on the Thus Spoke Kishibe Rohan series. It was written by Ballad Kitaguni (北國 ばらっど Kitaguni Baraddo) and published by Shueisha. Symmetry Room was included with the January 2018 issue of Ultra Jump.
It was then compiled in a collection named Rohan Kishibe Does Not Frolic with three other stories, which released for sale on July 19, 2018. Symmetry Room is on pages 117-194 in the volume.