The Melody of Oblivion - S01

In the 20th century, a brutal war raged between humans and monsters. Though the monsters now dominate the world, they remain largely hidden, ruling through fear. A young boy named Bokka often reflects on the past, curious about the fate of the Meros Warriors-heroes who once fought valiantly against the demons. His life changes when he meets Kurofune, who introduces him to the power of the Meros and their I-bar war machines. Only warriors can perceive the Melody of Oblivion, a spectral girl waiting to be freed, who may hold the key to humanity's salvation. During a clash between Kurofune and a demon, Bokka makes an astonishing discovery-he can hear the melody too. As he travels, he encounters monsters, their agents, and new allies, gradually uncovering the full potential of his abilities. His mission becomes clear: he must fight to rescue the Melody of Oblivion and restore a world that has lost its once-beautiful song.