ZERO

The Kaijin, mysterious creatures that can take the form of humans. Humanity had been fighting against them for years. Until one day humans started to develop special abilities called [Skills]. A new organization arose called the hero faction led by seven powerful individuals called "The Seven" who ended the first war.

Shortly after the first war, humanity rebuilt and fortified their cities. Creating the NHA, National Hero Academy. A school built to train the next generation of heroes to protect the earth from the Kaijin threat.

There are seven major cities named after each of the seven heroes. Arc City, Lunaris, Atlantide, Ignus, Sonus, Gale and Ventus.

[Skills] are special abilities humans have developed after a strange comet had crashed down to earth during the first Kaijin war. [Skills] come in four different categories. Elemental, Mutant, Transformation, and Boost. Boost types [Skills] are extremely rare to the point they're practically non-existent.