Beautiful and brilliant sorcerer girls just can't have nice things, huh? All I wanted to do was swipe a little bit of bandit treasure. Now suddenly I'm being chased around by icky trolls, nasty demons, mean mummies, and brooding golem bad boys. And for what? A tiny little artifact that can bring about the end of the world? Hah! I'll show them there's a reason you don't cross Lina Inverse...

A certain college girl who's loved books ever since she was a little girl dies in an accident and is reborn in another world she knows nothing about. She is now Myne, the sickly five-year-old daughter of a poor soldier. To make things worse, the world she's been reborn in has a very low literacy rate and books mostly don't exist. She'd have to pay an enormous amount of money to buy one.

Sagara Sousuke isn't your typical high school student. He reads military enthusiast magazines; he responds to questions with "affirmative;" he brings grenades to school in his bag. Though everyone at school takes him for a hopeless military geek, Chidori Kaname thinks there might be something more to him. When their plane is hijacked in the middle of a field trip, Kaname's instincts will prove correct: Sousuke is an elite, mech-piloting mercenary... and he's here to protect her!

The online game Yamada Kenichi had been playing religiously is shutting down its servers, leaving him with a void in his heart. He looks for a new game to fill it, but everything he finds is way too easy. The kind of game he likes—the kind punishing enough to make players want to spend thousands of hours on it—just isn't around anymore.

The year 12,090 AD. It is a dark time for the world. Humanity is just crawling out from under 300 years of domination by the race of vampires known as the Nobility. The war against the vampires has taken its toll; cities lie in ruin, the countryside is fragmented into small villages and fiefdoms that still struggle against nightly raids by the fallen vampires - and the remnants of their genetically manufactured demons and werewolves.