Ushiro no Seki no Gal ni Sukarete Shimatta. Mou Ore wa Dame Kamoshirenai.  

Ushiro no Seki no Gal ni Sukarete Shimatta. Mou Ore wa Dame Kamoshirenai. began as a web novel on Kakuyomu on October 2, 2020. Kadokawa has released a revised and illustrated version of the series since June 17, 2022 under its Fujimi Fantasia Bunko label.