About “Ultimate Otaku Teacher”
Ultimate Otaku Teacher, subtitled He Is an Ultimate Teacher, is a Japanese manga series written and illustrated by Takeshi Azuma. It was serialized in Shogakukan's Weekly Shōnen Sunday magazine from November 2011 to March 2017, with its chapters collected in 26 tankōbon volumes. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.