Muv-Luv Alternative 2nd Season

Takeru Shirogane returns to his original world with the help of Yuuko Kouzuki's technology and Kasumi Yashiro's psychic powers. His goal is to enlist Yuuko's aid in completing the Alternative IV project, humanity's last hope against the BETA alien invasion. This project is crucial for the planet's survival, and its completion is nearing. After witnessing a close friend's death during a test of the Tactical Surface Fighters, Takeru experiences severe trauma and loses his will to fight.