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  ――Once, in this world, there was a hero called the "Strongest Adventurer."

With a sword, faster than anyone. With magic, stronger than anyone. Facing monsters, instantly seeing through their ecology and weaknesses. No matter how desperate the battlefield, they always survived.

The adventurer rank given to that hero was even higher than S-rank. A special exception granted to only one person in the history of the Adventurer's Guild.

――【EX Rank】.

In the final battle against the Demon King over 400 years ago. In the battle that would later be called the 【Grand Fall】, that hero defeated the Demon King alongside their comrades.

The world was saved. A few years passed.

The threat of the Demon King became a thing of the past, and people finally regained peace.

And then――that hero vanished from history. No one knows.

What happened to that hero afterward. Where they lived.

Why they disappeared.

Rumors grew, and names and titles given by later generations became attached to that hero.

《Calamity Eater》 《The Last Sword》 《Godslayer》 《EX》

Gradually, those aliases took on a life of their own, and the hero's actual name became known to only a very few people.

And then――a few years later.

An attack by the remnants of the Demon King's army. After a fierce battle, the hero defeated the enemies. However, they were also fatally wounded. A collapsing body. Fading consciousness.

At that moment.

The forbidden magic they had once carved into themselves activated. 【Reincarnation Return】 A forbidden resurrection magic that can only be activated once per caster. In exchange for bringing the dead back to life, it uses the "experience" accumulated in the soul as fuel.

――And so.

The hero was revived.

However, the price was heavy. From within that hero, the vast memories accumulated as an adventurer were lost.

Comrades. Battles. Magic. Sword techniques. Adventures. Glory.

And even――

The fact that they were once the strongest in the world. Everything was locked deep within their memories.

And that forbidden spell had one more secondary effect, which was―― the nature of granting a "new identity" to the soul of the resurrected subject.

If the real name was A and the current name is B, the subject only retains the perception that "my name is B" after resurrection.

In other words, the resurrected subject had no doubt that their name was Guest.

【400 years after the Grand Fall】

Guest woke up in a forest near the guild――the Grand Arcana branch.

And one week ago, standing before a massive building, Guest was clutching a single piece of paper. An adventurer registration card.

On it, in simple characters, it was written: 【Adventurer Rank: G】 That was the title given to the current Guest. No special power. At least, that's what they think. All that remains in their memory is their name and general knowledge.

Why did I aim to be an adventurer? What was I doing before? What kind of magic could I use? Who was I traveling with?

I can't remember anything.

That's why I decided to start over from the beginning. G-rank. Rookie adventurer. That is who I am now.

【Present】 ───One week since waking up and completing adventurer registration

The guild has been noisy since morning.

The receptionist raised her voice.

"Attention everyone! Starting today, the guild will be hosting a regular joint training exercise! This is an event open to all ranks. Any rank may participate, but you are responsible for your own injuries! You get 2 silver coins just for participating, and there are further rewards for top performers! Please join us!"