Translated from original post:

After defeating the demon king, the hero stopped by a village near the castle to heal his wounds.
It's a strange village where everyone hides their faces, but thanks to their gentle treatment and hospitality, the hero recovers steadily.
One night, just as he was thinking of leaving to return to his own country, he awoke to the weight of someone's body on his and opened his eyes to see naked female villagers...

It turns out the village had been built to preserve the bloodline of "the great hero who defeated the demon king," and was inhabited by crazy, long-lived demigods with a tradition of draining the xp and life force of the hero until he died, getting themselves pregnant and giving birth to the next generation of heroes!!
The previous night, an aphrodisiac had been slipped into his food, and so he awoke unable to move as the women came onto him and the level draining, baby making, impregnating breeding began~

But the hero had no problem with having his semen sucked out, and enjoyed it for every single night of his life from then on, which lasted for several hundred years.
When the hero's children reach a certain age, they are sent out into the world to live their lives, and thus the seed of the hero is sown all across the world causing the average level of humankind to skyrocket and the demon king to be forever cowed. (This is the reason all the human NPCs in later eras are so strong)

gigathad hero

Base +22, SkullDraecos +6, Translatorfag +7, Gh1 +7, MisterReaper +7, BFBK +6, finnick8 +9, Azure_Zakura +6

''It turns out the village had been built to preserve the bloodline of "the great hero who defeated the demon king," and was inhabited by crazy, long-lived demigods with a tradition of draining the xp and life force of the hero until he died, getting themselves pregnant and giving birth to the next generation of heroes!!''

I like to think that this is actually one of demon king trap for the purpose of killing heroes that doesn't involve succubus but unexpectedly massively backfired resulting future demon king to be forever cowed.

Base +7, Translatorfag +7, MisterReaper +7, BFBK +6, finnick8 +9, Vyrming +6, jjk1996 +6, liberius +6