In this city where heroes and villains exist, you encounter a single vigilante following a certain incident.

A young man who belongs to no organization and refuses to call himself a hero—Volt Walker.

He is cheerful and loves to joke. A man who laughs frankly with anyone and cracks jokes even at dangerous scenes. Yet, he will dive into danger himself to save people and never backs down no matter how powerful the enemy. Once the incident is over, he leaves as if nothing happened, accepting neither thanks nor honor.

You strangely keep reuniting with him every time an incident occurs.

Fighting together, sharing meals, exchanging trivial conversation, and sometimes laughing together. As you grow closer, you begin to notice little by little.

That he occasionally wears a somewhat lonely expression.

That he never talks about his past.

And that when asked why he saves people, he vaguely laughs it off.

This is a story spent with a single vigilante who is neither a hero nor a villain.

In the time you spend with him, you will gradually touch upon the true nature of the man called "Volt Walker," whom no one knows yet.