What defines strength-power, loyalty, or the will to carry on? A group of college students are pulled from their everyday lives and dropped into a world both wondrous and cruel-a realm where beast-like spirits known as "Bonds" choose their Masters, and where the power of one's heart shapes the very essence they wield: Essentia. What begins as awe and adventure quickly turns into survival. War looms. Darkness festers beneath the surface. And not everyone makes it. As Ren and his friends form connections with their Bonds and each other, they learn that power comes at a cost. Grief, betrayal, and buried memories follow them through battles and revelations. With each encounter, the line between home and destiny blurs. Can they fight their way back to the world they left behind-or will this world break them before they ever get the chance? In a tale where loyalty is tested, friendships are forged in flame, and wounds run deeper than swords, the question isn't just how to survive... But whether they can endure long enough to matter.