It was announced at the end of the 126th chapter of Shimoku Kio's Genshiken manga, released on July 25 in the September 2016 issue of Kodansha's Afternoon magazine, that it is the penultimate chapter and the following chapter will be its final. The issue containing the final chapter goes on sale on August 25.

The main Genshiken manga series had been serialized between 2002 and 2006 in Afternoon magazine, focusing on male otaku as main characters. Genshiken Nidaime started serialization on October 25, 2010 in the same magazine, joined by kouhai who are fujoshi and a fudanshi. The series has recently released its 20th volume on June 23. Each series also received multiple anime adaptations. Palm Studios adapted the manga into a 12 episode anime that aired in 2004, followed by a three-episode OVA by Ajia-Do. Studio Arms went in-charge of the anime's second season. Production I.G helmed the TV anime, OVA, and specials of Genshiken Nidaime.

Source: Otakomu