

Charlie guards the Demon-Sealing Tower for 1,000 years, holding back three top-tier Beast Kings and hordes of Soul Beasts that all tremble at his blade. The Sky Kingdom royal court frames him as unfit for the post and forces him to abandon the tower. Half a day after he leaves, the tower shatters, and billions of Soul Beasts flood the Human World.

Mark Turner awakens as a "useless" apprentice mage, instantly becoming the academy's laughingstock. Even his fiancée, Ellen Baker—the school's S-rank Blood Berserker—publicly breaks off their engagement, leaving him humiliated and shattered. But in the depths of despair, a mysterious voice awakens in his mind, pulling him into a mental world where a spirit girl appears. She reveals the truth: his SSS-tier talent has transformed his fire skill into a living spirit. Only the first seal of the five elements in his body has been unlocked. Beneath "useless" lies a powerful figure waiting to be awakened.