The story centers on Nonoha Nonohara, a young manga artist who just enrolled in a new school. She finds herself surrounded by a group of three super-cute guys. (Source: MU)

The diehard otaku Kirino Kousaka has returned and settled back into life in Japan with her friends and family. Despite what her older brother Kyousuke has previously done for her, Kirino continues to give him the cold shoulder, much to his frustration. He is worried that his persuasion for Kirino to drop her track and field training in America and return home may have severely strained his relationship with her. On top of that, Kyousuke now also has to decode a bold and cryptic message from Ruri Kuroneko Gokou, his junior at school as well as Kirino's friend. As the ties between the two siblings and their friends deepen, Kirino and Kyousuke will soon have to figure out how they want to deal with these relationships, helping each other realize their own feelings in the process. In spite of that, Kirino still manages to find time to satisfy her otaku needs with the company of her brother.

Chisato Mizusawa is a calm and collected assistant office manager who apparently dislikes drinking alcohol. But she actually likes it and has a secret side to her that emerges only when drunk: her cute persona, which she only reveals to her husband, the bartender Sora. Each day when Chisato comes home, Sora takes care of his beloved wife, providing her with a good meal and a fresh drink. These drinks include Plum Splet, Irish Coffee, Orange Breeze, and many more tasty concoctions that she eagerly gulps down. But as much as she likes alcohol, she loves her kindhearted husband more. Together, they share a life that is filled with happiness—and the more-than-occasional cocktail.

Super deformed parody shorts of Overlord III streamed on Kadokawa's official YouTube channel.