Having slept through all four of her alarms, the energetic Narumi Momose finds herself running late for her first day of work at a new office. As she races to catch her train, she makes a promise to herself that none of her coworkers will find out about her dark secret: that she is an otaku and a fujoshi. Her plan goes instantly awry, though, when she runs into Hirotaka Nifuji, an old friend from middle school. Although she tries to keep her secret by inviting him out for drinks after work, her cover is blown when he casually asks her whether or not she will be attending the upcoming Summer Comiket. Luckily for her, the only witnesses—Hanako Koyanagi and Tarou Kabakura—are otaku as well. Later that night, the pair go out for drinks so that they can catch up after all the years apart. After Narumi complains about her previous boyfriend breaking up with her because he refused to date a fujoshi, Hirotaka suggests that she try dating a fellow otaku, specifically himself. He makes a solemn promise to always be there for her, to support her, and to help her farm for rare drops in Monster Hunter. Blown away by the proposal, Narumi agrees immediately. Thus the two otaku start dating, and their adorably awkward romance begins. [Written by MAL Rewrite]

Vash the Stampede is a contradiction. He has a notorious reputation as "The Humanoid Typhoon," laying anything he comes across to waste on the desolate planet of Gunsmoke. However, Vash is in fact very non-confrontational and kind-hearted, living by a code of pacifism.

Twenty years ago, a high-profile bank heist went sour. The ringleader, Gasback Gallon Getaway, swore to get back at his backstabbing crew and the man who stopped him from killing them: Vash the Stampede. In the present day, the traitorous crew has been living the good life as successful entrepreneurs and politicians. Although two decades have passed, Gasback's bitterness has not waned as he aims to take them down one by one, by any means necessary. 

Just in time to foil Gasback's plot, Vash has arrived in Macca City. Teaming up with the mysterious Amelia Ann McFly, along with the insurance agents Milly Thompson and Meryl Stryfe, Vash is ready to rumble. 

[Written by MAL Rewrite]

Two OVA episodes featuring additional stories. Episode 0: Ritsu and Takano used to date back in high school, but broke up due to a misunderstanding. This is that story. Episode 12.5: Hatori and Chiaki go to visit the latter's family. It's really awkward in many, many ways.

Following the horrific assault on the Re-Estize capital city, the Guardians of the Great Tomb of Nazarick return home to their master Ainz Ooal Gown. After months of laying the groundwork, they are finally ready to set their plans of world domination into action. As Ainz's war machine gathers strength, the rest of the world keeps moving. The remote Carne Village, which Ainz once saved from certain doom, continues to prosper despite the many threats on its doorstep. And in the northeastern Baharuth Empire, a certain Bloody Emperor sets his sights on the rising power of Nazarick. Blood is shed, heroes fall, and nations rise. Can anyone, or anything, challenge the supreme power of Ainz Ooal Gown? [Written by MAL Rewrite]