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Veit.
If you are reading this letter, it means I have been defeated by the Hero.
At the same time, it must also mean that you have struck down the Hero. I cannot imagine the Hero ever reconciling with you and yours.
To think of it that way, this is a most unlikely scenario. What am I even writing? Even I find myself ridiculous.
And yet, at the same time, I feel you might truly be able to defeat the Hero.
That is why I leave this letter behind.

First, some practical matters. I have recorded the knowledge carried over from my previous life in Japanese. On the right-hand shelf in my study, there are four books bound in red. Translate whatever portions you deem necessary and hand them over to the technicians.
As for my successor, if none object, I would entrust the role to Gomoviroa. That one has both the accomplishments and the ability.
I had once considered recommending you as successor, but you refused me.

Yet I do understand why you declined my offer.
You know well the crushing weight of responsibility borne by a king.
One careless word from the throne may sow fear, distrust, or discord among his people. Such folly as in the story of Chu’s Belt must never be repeated.¹ And surely there will also be those who seek to exploit royal authority for their own gain.
Therefore, a king must ever be cautious.
Whether I myself was sufficiently cautious, I cannot say.

Alas, a king is sometimes forced to make merciless decisions.
There are times when he must order the slaughter of an enemy’s entire clan, or the execution of surrendered soldiers—just as the warlords of the Sengoku age once did.
It is not as if they relished giving such commands, but there are times when it must be done.

However, I also know well that you could never do such things.
Therefore, I dare not ask you to be Demon Lord.
Your mercy even toward enemies is both your naivete and your strength. Among demonfolk of course, but also among the humans of this world, such a peaceful outlook is rare.
Yet I believe it is precisely that outlook which has the power to change this world.
Perhaps you are better suited to remain a light-footed lieutenant, reshaping the world as you please.

There is one thing, however, for which I must apologize.
I once told you that I would never speak of our former lives, nor ask who you truly are.
But the truth is, I had a faint suspicion all along.

You are likely from decades, or even more than a century, after my own era. A time when technology had advanced, and material wealth was abundant.
From your progressive ideas and values, both I and others learned much. I am grateful. Though you may not realize it yourself.

From that, I cannot help but feel you came from a more peaceful age than mine. Your words and deeds carry the air of calm times.
Which means, in some form or another, what I once strove my whole life to achieve in my former world may indeed have been realized.
Forgive my idle speculation.
Once I begin thinking, I cannot stop.

Yet thanks to that, I have lived this life to the fullest, with no regrets.
Though, truth be told, as I write this, I still live.

I have no intention of losing to some Hero. I am Demon Lord, mediator of peace, Friedenrichter.
At this moment I am unburdened by worry. In both my previous life and this one, I can proudly say I have triumphed over life.
The Demon Lord’s army steadily expands its dominion. Worthy talents are being fostered. I hold no fear for the matter of succession.
In light of that, my own life or death is but a trivial thing.
A fine chance—let me revel in battle once more.

Still, having written this, it may be amusing to hand it to you after my clash with the Hero.
I wonder what sort of face you will make then. That thought brings me a small measure of delight.