Censored Equation (検閲方程式 Kenetsu Hōteishiki) 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 Yusuke Iba (維羽 裕介 Iba Yūsuke) and published by Shueisha. Censored Equation was included with the September 2017 issue of Ultra Jump to coincide with the eighth episode release of the Thus Spoke Kishibe Rohan series.
It was then compiled in a collection named Rohan Kishibe Does Not Shout with four other stories, which released for sale on June 19, 2018. Censored Equation is on pages 157-198 in the volume.