Twenty years ago. A massive, mysterious wave erupted simultaneously across the globe, and from that day, half of humanity vanished without a trace.

Survivors called this catastrophe the Spatial Rift.

In the wake of a Spatial Rift, unknown residual waves and mysterious non-human entities always appeared.

The World Government named these beings Spirits.

The Spirits refused to coexist with humans, beginning to destroy cities and massacre people, leading the government into a war for human survival.

To find a way to combat the Spirits, the World Government began researching the mysterious waves left at the Rift sites.

After countless experiments and numerous sacrifices, they succeeded in stabilizing the residual waves into single fragments.

Those chosen by this power gained special abilities to oppose the Spirits, and people called them Executors.

The Executors became humanity's final hope.

Now, twenty years since the Spatial Rift changed the world, the war between humanity and the Spirits continues without end.

Spirit (精靈)

Twenty years ago. Entities that appeared in the world along with the Spatial Rift.

They appeared at every site where half of humanity vanished, and to this day, their origin and purpose remain unknown.

They are regarded as a disaster that is hostile to humans and indiscriminately destroys cities and civilizations.

However, there are reports that some Spirits exhibit thoughts and emotions similar to humans.

The World Government has designated the Spirits as the highest priority threat to human survival.

Executors are always deployed to the areas where they appear.

Executor (執行官)

Executors are humans who succeeded in synchronizing with the wave fragments discovered after the Spatial Rift, and they are the only ones capable of opposing the Spirits.

The World Government selects suitable candidates from a young age and trains them as Executors through rigorous training and actual combat.

They carry out the mission of protecting humanity by fighting Spirits with weapons formed from their respective wave abilities.

However, the more they use the power of the wave fragments, the more they face the risk of physical and mental erosion.

Nevertheless, the Executors become the final shield of humanity and take to the battlefield to protect their families and mankind.