Summoned by an Elf Girl to Save Her in a Broken Dark World

In a world teetering on the brink of extinction due to a major event 50 years ago that altered the balance of power between nations, one of the most affected was Alfheim. There, a girl with blue hair and red eyes may change a destiny seemingly sealed with inevitable death.  The protagonist Orion was summoned as a familia through a mysterious pact, to try and save the elf's fate while simultaneously finding meaning for himself amidst the challenges they will face together. He might save Lyriel... or is he just following a new path to the same dark death of this broken world?