The Melody of Oblivion

Bocca Serenade, is unhappy with his high school life. He wants to become a warrior like the ones from the story told to him by Tsunagi.

Bocca has become a Meros Warrior, and Tsunagi gives the young warrior his own Aibar machine.

After starting their adventure, Bokka and Sayako arrive in a town called "Bakuyagou", or "White Night Cape", where the sun never rises, making it a perfect place for tourist attractions.

Bocca finally learns that the robot creature he fought before was from the organization, Monster Union, who use robot creatures as weapons.

Although knowing the problems of White Night Cape, Bocca continues to try and destroy the Monster Union robot creature.

While following Kurofune, Bocca and Sayako encounter a dead end, but finds 'Nezumikoukoku', or 'Pyramid Scheme Valley', and also find a dam with a mural of a tear on it.