Hidden away in a corner of the Hunter Association's civil affairs office sits an elderly F-Rank clerk in a wheelchair, quietly making instant coffee and hoping nobody bothers him.

Unfortunately, people keep doing exactly that.

As mysterious monsters begin ignoring the rules every modern hunter relies on, the only person who understands how to fight them is a forgotten legend from the first generation. What starts as reluctantly teaching a few promising hunters soon becomes a direct challenge to everything the Association thought it knew about strength.

All he wanted was a peaceful desk job.

Everyone else keeps insisting on making it impossible.