Muv-Luv Alternative

An alien invasion begins in the 1970s, creating a worldwide crisis. In the late 1990s, beings dubbed BETAs begin their invasion of Japan, and human forces for counterattack are very limited.

When Takeru Shirogane wakes up, he first believes that he had a bad dream: the BETAs, most of humanity sacrificed... But as soon as he comes out, he realizes that he has actually gone back in time, which gives him a second chance to prevent the irreparable.

As Takeru starts to feel anxious about whether or not he can actually make a difference, Professor Kouzuki demands more concrete evidence of his knowledge about future events.

Takeru's efforts to change the future are starting to have an effect, as the 207th's Tactical Surface Fighters show up earlier than in the previous timeline. And if an idea he's cooking up works, it might make them even more effective weapons against the BETA.

Takeru and Professor Kouzuki have collaborated to create a new operating system for the 207th's Tactical Surface Fighters, making the anti-BETA weapons more maneuverable and responsive than ever. But will it even matter if Yuuko can't actually make some progress on the mysterious Alternative IV plan?

In order to help Professor Kouzuki fulfil her plans for Alternative IV, Takeru partakes in an experiment designed to send him back to his home world.

Takeru's trip back to his original world concludes after an encounter with his childhood friend, Sumika. After his return, he learns about the enigmatic Yashiro Kasumi's mysterious past.

An insurrection threatens to ignite a full-scale civil war in Japan, and the 207th Tactical Armored Flight finds their first combat mission might be against other humans, instead of the invading BETA aliens.

Takeru and his training squad head out to assist the UN and Japanese forces in dealing with a coup d'état, but they find themselves dealing with what might be the most vital mission in the entire conflict.

As Takeru and the 207th Training Flight escort the Shogun across Japan, Professor Yuuko's personal task force fights a desperate battle to keep the rebels off their tails.

The Shogun and her escorts have been surrounded by the rebels, who have offered them a 60 minute ceasefire in the hopes of a peaceful resolution. Can Takeru, the 207th Training Flight, the Royal Guard, and the US Army find a way past them to return to Yokohama Base?

Negotiations have fallen apart, as the rebels renew their attacks on the assembled UN-US-Royal Guard forces. Will the 207th Training Flight make it back to Yokohama Base alive? And will Takeru be able to save the world by helping Alternative IV become a reality?