Chapter 1: The Saint Who Absolutely Will Not Fall

History repeats itself.

If there is light, shadows are bound to form, and where shadows form, light is sure to appear somewhere.

Just as the Demon King fell to a hero 300 years ago, when a hero appears again, it’s only natural for the Demon King to resurrect as well.

Thus, when news of a hero summoned from another world spread, the five nations—who were always wary of each other—naturally began searching for companions blessed by the gods.

That’s how I ended up as part of the so-called “Hero’s Party,” the protectors of light.

Though, honestly, their actions make them seem more like idiots than heroes.

“Laura, can you enchant my sword?”

“… Okay, I’ll trust you, hero.”

The request comes from a man with rare black hair, an uncommon sight in this world.

The “hero” asks Laura—a court magician and a descendant of the dragonkind—to enchant his sword.

As countless runes began circling the sword, they soon merged with it, emitting an intense heat.

It’s a simple enchantment spell that imbues the sword with an element, but when a magical genius like Laura casts it, the results are extraordinary.

The monsters that had been relentlessly descending near the sealed dungeon retreated noticeably under the overwhelming aura.

“Leave the path-clearing to me. I’ll make sure I meet your expectations.”

Inside the dungeon, illuminated by the glow of Laura’s enchantment spell, Natalia—a knight with dazzling golden hair—draws her sword in response.

With a ringing sound, her rapier gleams dangerously sharp, embodying an aura that inspires countless soldiers of the kingdom.

Our party’s plan is simple: Natalia clears a path through the swarm of monsters, allowing the hero to charge directly to the dungeon boss’s lair.

Afterward, the hero—bolstered by numerous enhancement spells—duels the boss, destroys the magical core maintaining the dungeon, and ensures our safe return.

Yes, it’s a ridiculously reckless plan.

Why we’re attempting a blitz strategy when I’m the designated healer, or how long Laura and I can hold off the monsters alone, is anyone’s guess.

But just because the black-haired hero proposed it, everyone blindly accepts it as brilliant. Have they collectively lost their minds?

“Um… can’t we just take it slow and go for a long-term strategy?”

There’s no real reason to go along with such an absurd plan, especially since it’s not a time-sensitive quest.

So, I timidly raise my hand and voice my opinion, but…

“What nonsense is this, Sera? This is the hero’s considerate way of keeping us safe. Of course, we must trust him to call ourselves his companions!”

“… Sera, you’re too timid. Trust the hero…”

The hero, Kim Su-Hyun, summoned from another world, has the entire party wrapped around his finger.

They reject any alternative plans outright.

“It’s fine, Sera. I promise I’ll never put you in danger.”

He flashes me a bright smile. And just like that, my headache flares up again. Damn it…

Why does everyone blindly agree to such idiotic plans? Why are my party members so infatuated with this ordinary-looking man? The reason lies in the hero’s power—hypnosis.

Even now, he uses his hypnosis ability subtly on me, the lone dissenter. Thanks to it, I’ve been dealing with near-constant headaches.

Thankfully, or perhaps unfortunately, since I have memories of living as a man for much longer, the hypnosis only gives me mild headaches, and it doesn’t fully work on me.

Yes, there’s no point in hiding it. This world is the setting of a game—a fantasy-themed adult game.

The story follows a hero summoned to this world, equipped with hypnosis abilities to train heroines as he pleases.

And I… am the main heroine, the Saint. Damn it.

The name “Sera” belongs to an ordinary girl whose divine blessing, revealed through a tattoo on her body, designates her as the Saint and a companion of the hero.

Similarly, Laura and Natalia’s tattoos revealed their roles as hero’s companions. Future heroines will also discover their abilities through such tattoos.

The problem is… damn it… the tattoos are engraved near the womb. Yes, we’re talking about that kind of tattoo.

When I first saw the tattoo on Sera’s body after waking up here, I was mortified to the point of wanting to die.

“… Alright, I’ll trust you.”

Under the influence of hypnosis, Laura and Natalia become even more blindly devoted to the hero.

Trying to reason with them any further would only drive me insane, so I reluctantly agree to participate in this reckless plan for now…

“Your swordsmanship improves with each passing day. Most impressive is your self-sacrificing spirit, challenging the boss alone for the sake of your companions… truly the model of a knight.”

“Hero… you’re amazing…”

Fast forward to nightfall, with the sun long gone. After completing a quest to explore a suspiciously ominous dungeon, our party settled into an inn and began eating dinner.

“Haha, it was nothing, really.”

From my perspective, it’s just brute-force stats carrying him through. If anyone normal attempted that, they’d be dead ten times over. Yet, these heroines won’t stop showering him with praise.

Why insist on a blitz strategy, leaving me—the one who can regenerate limbs—on the sidelines? The answer is simple. As the protagonist of an 18+ game, he likely wants to absorb the dungeon’s dark energy to further enhance his hypnotic abilities.

Case in point: Laura and Natalia are already blushing and clinging to the hero.

“Hero, I can’t hold back any longer. Please… grant me your ‘Holy Sword’ tonight as well…”

“Hey, no fair, sis! Hero, give me a reward too… I’ve been holding back all morning… I can’t take it anymore…”

Holding back all morning? After rolling around all night, they’re still unsatisfied? Even a hormone-crazed monkey could restrain itself better than this.

Yes, this world is the setting of an 18+ game, but not just any 18+ game. It’s a hardcore game with themes of hypnosis, training, and corruption.

The hero uses his hypnotic powers to slowly corrupt the heroines. Sometimes, he indulges in steamy moments with them. Other times, he feeds them to goblins or orcs. By the end, some heroines are even turned into public toilets on the streets.

Naturally, the main heroine, Saint Sera, sees the most of these scenes.

And guess what? That’s me. Damn it.

One thing is certain: Laura and Natalia are already head-over-heels for the hero, completely engrossed in his influence. They’ve fallen into the first stages of hypnotic corruption.

In other words, I can forget about getting a decent night’s sleep. Their noises from the next room are going to keep me awake. Damn these oversexed monkeys.

“Ugh…!”

Just as the thought crossed my mind, the hero’s eyes flashed red for a brief moment. A sharp headache followed, making me groan involuntarily.

This crazy bastard… Even with Laura and Natalia as his playthings, he won’t stop trying to hypnotize me.

It makes sense, though. In this game, the only “bad ending” occurs if the hero fails to corrupt the saint.

If the hero enters the Demon King’s castle without turning the saint into his s*ave, she begins doubting the increasingly twisted behavior of her companions. Leading a group of holy knights, she launches a surprise attack.

The corrupted heroines are rescued from their hypnotic state, and the hero is executed. The game ends with a brief epilogue where a new hero defeats the Demon King.

In short, the summoned hero, Kim Su-Hyun, has only one fate if he fails to corrupt me: death.

“Um, excuse me… I’m not feeling well. I think I’ll head to bed early.”

There’s no way I’m letting this lunatic corrupt me. Still, if I resist too blatantly, he’ll only double down on his efforts. For now, I’ll feign a mild hypnosis effect and excuse myself under the pretense of feeling unwell.

“Oh, uh, sure… Rest well!”

Even the hero can’t go all-out in the early stages of the game when not all heroines have appeared. With a small wave, he lets me leave without protest.

Fine, enjoy your time with Laura and Natalia, you shameless degenerate. I’ll make sure this game ends in a bad ending.

Quest: Defeat the Demon King. This is the only way to return to your original world.

The sole piece of information in my status window outlines my way back home.

That’s why I must become the “Saint Who Absolutely Will Not Fall.”