Magic can help people achieve extraordinary things, but it can also bewitch hearts and bring destruction. Due to years of misuse of magic, the world is ravaged. To stop the collapse, humanity launched the "War of Sealing Magic," and after a long and fierce battle, finally defeated the Magic King, Gumur, ending the age of magic. However, the wounds left by magic are difficult to erase, so humanity established the "Demon Sealing Bureau," to both purge the remaining demons and repair this ravaged world...