Since 1973, an invasion of aliens upon Earth known as BETA has driven human civilization to destruction. In order to defend themselves from this enormous mass of enemy force, mankind has developed large humanoid arms called Tactical Surface Fighters and deployed them to its defense lines through out the world. However, its efforts could only slow down the impending defeat, and mankind has been forced to abandon the major areas of the Eurasian Continent. For 30 years, they have been caught in an endless war against BETA without any hopes of victory.

Now in 2001, Imperial Japan faces difficulties in the development of the next-generation of Tactical Surface Fighters (TSF) as it defends the front lines of the Far East. The UN has proposed a joint development program between Imperial Japan and the United States as a part of its TSF international mutual development unit, the Prominence Project.

Yui Takamura (a surface pilot of the Imperial Royal Guards of Japan) is given the responsibility of the project and sets off to Alaska. Meanwhile, Yuya Bridges, also a surface pilot of the US Army, heads to the same destination.

They never had any idea just how drastically their encounter would change their fates.

This story of internal dilemma takes place during the development of the new Tactical Surface Fighters, the most crucial and effective weapons against BETA. And this time, the stakes are much higher than a handful of lives and our sanity.

All we can do is fight.

(Source: Muv-Luv Total Eclipse Official English Website, edited)

Halo Legends features seven different stories set in the Halo universe, each made by a different studio. The Babysitter follows the Helljumpers, Orbital Drop Shock Troopers who are sent behind enemy lines to perform an assassination. The Duel features the tale of an ancient Arbiter who refused to bow down to the Covenant religion. Branded a heretic, he must now face the consequences of his actions. The Package depicts a group of Spartans, including the Master Chief, who are deployed to infiltrate a Covenant flagship and retrieve a “package” in a secret operation. Origins shows Master Chief and Cortana stranded following the events of Halo 3, with Cortana summarizing the fall of the Forerunners, the defeat of the Flood, and the rise of humanity as well as the events of the Human-Covenant War. Homecoming centers on the Spartan Daisy, who reminisces on her past, and the SPARTAN-II project while evacuating UNSC soldiers pinned down by Covenant forces. Prototype is viewed from the perspective of Marine Sergeant Ghost, who is determined to fight for all he is worth in order to make up for past grievances. Odd One Out is a non-canon parody of Halo featuring Spartan 1337, who suffers from extremely bad luck.

A boy gets involved in an accident when in kindergarten, horribly damaging his arm, but the doctors somehow manage to save it. Now, several years later, his arm seems to be becoming the focus of strange events as it turns out to be more than a normal arm. Meanwhile, a secret organizations is out to get hold of him and the power he possess.

Dreaming of becoming a hero and vanquishing the Demon King, Raul Chaser enters the Hero Training Program in pursuit of his ambition. However, when the Demon King is defeated and peace returns to the world, the Hero Training Program is suspended indefinitely, making it impossible for anyone to become a hero. Two years later, Raul reluctantly works at a small electronics store called Magic Shop Leon. Though the former hero-in-training is plagued by the mundanity of working in retail, everything changes with the arrival of a new hire. Appearing at first to be just a boy with good looks, "he" turns out to be a female demon by the name of Fino Bloodstone. She is not just any old demon either—Raul's new coworker is in fact the daughter of the late Demon King! Handed the responsibility of training this eccentric new employee, Raul soon finds his life becoming livelier than it ever was before. [Written by MAL Rewrite]