A strong and dutiful servant of a near extinct race of ‘oni’ warriors, Rem is as much a perfect caretaker as a threat in battle. The younger sister of a set of twins, of which who her complex to reach the heights of the prodigious Ram had marked her heart ever since their birth. Liberated by Natsuki Subaru, a man from another world who struggling meddled to shine light on her own greatness, she in turn did the same for him through a series of struggles.

Suffering a grievous wound that left her in a magical induced coma, the world forgot about her and the love they shared for one another. Only remaining in the heart of Subaru. Newly awoken, she finds herself forgetting everything, who she is and why this man is so endeared to her. Stuck with him, must repiece the genesis of herself and the bonds that she once shared.