Psalm of Nue

In an endless war full of blood and sorrow between humans and the clairys, Nue, an Archknight, and his enemy, a Clairys named Mune, strangely fall into an otherworldly gate that takes them both to the future, decades since their battle. Their adventure to find a way back to the time they came brings them on a meaningful journey about knowing and understanding their world, their war, and a reason which intertwined their fate.