Eiden Sakitaka is an eccentric medieval weapon collector and auditor who always produces ‘Excellency’ in the outcome of his work. One day, an intern couldn’t follow his instruction and ended up injured with Eiden having to pay for their treatment, but he wouldn’t get to eat if he didn’t pawn his collection.

Instead, he bought a dagger hoping it would sell big time if he clean the rust out of it. His plan worked, but instead of money, he woke up in another world, residing inside the body of Nilam Voltimier, a noble whose hand was gripping the very same dagger, half-buried in a fresh corpse.