A Boss Fight from the First Step — All I Have Left Is the Infinite Estrus Tentacle Room
"Damn it, damn it, damn it, damn it..."
Kim Dong-wook gnawed at his nails, sunk in panic, as the knight Lise tore through the dungeon at a terrifying pace, sweeping aside every trap and defensive fixture in her path.
Of all moments—the very instant the old man protecting him vanished—a figure the old man himself had called final-boss tier came crashing in. Turn it over as he might, he could not think of a single answer that would get him out of this.
With the handful of mana the old man had left planted in his chest, and the dungeon's workings that rose unbidden in his mind, he threw countless combat golems into the fight and tried to lure her toward the trapped chambers. Lise's gale-force charge, bullheaded and straight as a spear, simply could not be controlled. From the outset, the very notion of baiting her anywhere with monsters was meaningless before martial power that overwhelming.
Every time that glossy red hair whipped through the air, the combat golems crumbled back into handfuls of dirt and scrap, and nothing remained where they had stood but the yellow afterglow of golden armor.
"Kalzeon!! Stop running and settle this with me!!"
"Again! And again! And again! If you ignore me and flee, I will hunt you to the ends of hell and make you answer for your crimes!!"
From the way she spat the words while driving forward with that savage momentum, it was easy enough to infer that the old man who had brought me here was someone named Kalzeon, and that she bore him a grudge of monstrous size.
".....If I explain things properly, maybe she'll spare me?"
I was already lining up a quick surrender when Lise's despairing shout reached me.
"If you do not show yourself, I will annihilate everything connected to you from the continent of Aios."
Kim Dong-wook weighed whether he himself was included in that everything, and the mana of Kalzeon stirring in his chest soon made the truth plain. He was very much included.
"....Should I at least play dead..."
Cutting down combat golems as she pressed on with that same ferocious drive, Lise was growing impatient.
She had finally found the trail of the Kalzeon she had chased for so long—and the moment she arrived, the mana of Kalzeon that had filled the dungeon was dwindling before her eyes, conspicuously, unmistakably.
"Damn those high officials of the Empire..."
Of the three empires and nine kingdoms that divided the Aios Continent, the Pris Empire prided itself above all on the might of its knight orders. Even among those orders, Lise was spoken of as the strongest, and the Empire could not afford to let her be spent in vain against Kalzeon. So it had kept every scrap of information about him sealed away from her, under the strictest control.
Trusting only the Empire's intelligence service, she had shut herself in the training hall and honed her sword in silence, waiting for nothing but her match with Kalzeon. Now she cursed her own complacency and her own incompetence, and hurled herself forward once more with that same cutting fury.
Reducing dozens, then hundreds of combat golems to nothing as she broke through the dungeon, Lise at last found a man collapsed in an empty stretch of corridor. For the first time, she stopped, and opened her mouth.
"Get up."
"Ugh... ngh..."
At her icy command I hauled myself upright, forcing out the most agonized expression and groan I could manage. Lise only stared me down with cold eyes, wary to the bone. The pressure coming off her said that one wrong move and she would cut me down where I stood, so I swallowed dryly and opened my mouth with care.
"...Ngh... please, spare me... I remember meeting some old man, and that's as far as it goes... When I opened my eyes, I was here..."
I put on the most pitiful, sympathy-baiting face I could muster, but Lise answered with a thoroughly unimpressed look.
"Hoh... an old man, is it. Then where did this old man go?"
"Th-that, I don't really... He just said he was leaving for somewhere, let me go, and then—gahk—"
Having heard enough to decide my story wasn't worth another word, Lise closed the distance in a flash, drove a blow into my solar plexus, and spoke.
"A liar. Kalzeon has never once appeared in this world in the form of an old man. And when he takes an experimental subject he has kidnapped, he takes them with him. He has never once left one behind."
Pain surged in with her voice, and my consciousness began to slip. The last thing before my eyes was Lise's voluptuous chest, and one final instinct flared before the dark took me.
"Tits... fucking huge..."
A soft, heavy squash—and down I went.
The last sensation I felt as I blacked out on the floor was something plump and yielding.
"Ugh..."
How much time had passed? When I came to, I found myself bound in rope once again. And standing before me, face flushed crimson, glaring, was Lise.
"......Filthy wretch.... Just like Kalzeon.... How dare you... how dare you...."
Finding me awake, her voice shook with rage, and one hand was closed around the hilt of a sword that gleamed with golden light.
"P-please, spare me!!"
I slammed my head to the ground in desperate begging. It seemed to soothe her somewhat. Composure returned; she took her hand from the hilt and spoke.
"Guide me."
"What? To where..."
I lifted my head to ask again. Lise's hand went straight back to the hilt, and I—faster than anyone alive—slammed my forehead into the floor once more and shouted.
"I really, really don't know!! I'll tell you everything!! Please, spare me!!!"
"Hah.... I have already confirmed that you are nothing more than an ordinary man. However, the mana of Kalzeon carved into your chest is proof of a deep tie between you and him. So guide me. To the place where Kalzeon fled."
At her words I raised my head again, and past that voluptuous chest I could read her face: a terrifying obsession with Kalzeon.
"Kh... pervert... just like Kalzeon..."
The moment my eyes drifted to her chest of their own accord, her face flushed all over again. Watching that trembling voice and the hand moving toward the sword hilt, I opened my mouth at once.
"I-I'll guide you!!!"
Step. Step.
"Look, I'm seriously the victim here... I got forcibly summoned by some old geezer, Kalzeon or whatever his name was..."
"Silence. All you need do is show me the way."
Lise's one-sided decree shut my mouth at last, and after that the dungeon held no sound but the quiet footsteps of two people.
We walked a long while before I finally reached the room I had been aiming for. When I stopped, Lise stopped as well and spoke.
"Is this the room? What is written there?"
Infinite Estrus Tentacle Room
Above the closed door the words were written in Hangul. They were letters she had never seen in her life, so Lise waited only for my answer.
"It's a term from another world. It says 'warp gate.'"
"I see. Then go in."
"...Yes?"
Arms folded, Lise glared at me and answered with a tilt of her chin.
I put on a teary face and opened the wooden door. Pink-tinged walls of living flesh met my eyes, as if I had stepped into the guts of some beast.
"Oho... so warp gates like this exist as well. Is that so?"
She smiled with her eyes, still watching me clutch the door handle, and jerked her chin again—an order to go inside. Inwardly I crowed in triumph and broke into a dead sprint.
I ran flat out for the button installed inside the room, and promptly lost my footing and went down. Lise had caught me at speed, hooked my leg out from under me, and drawn her sword to my throat.
"You put that little head of yours to some use, trying to get inside the room. Did you think I would simply let you press the button?"
She looked at me as if I were pathetic. I grinned and answered.
"Heh heh... I win, you stupid cow-titted bitch!"
"What...?"
My shout threw her off—but in that instant, countless tentacles burst from the walls and came down on Lise at blinding speed. They matched her own pace, so she had no choice but to release me and devote herself to fending them off, biting her lip in bitter frustration.
If a fierce exchange dragged on, she might still escape the room. So I shouted at Lise, who had committed herself entirely to defense.
"Haa... dragging you into this room really was the only way... Thank you for sparing me! And thank you for being an idiot!!"
"Kh— you wretch... just like Kalzeon!! Filthy pervert!!!"
Unable to swallow her anger at the provocation, she opened her mouth and glared at me—and that opening decided the match between her and the tentacles. Once a tentacle coiled around the hand that held her sword, the end came with pathetic ease: Lise's limbs were bound.

As the tentacles stripped her armor and dragged her toward the wall, I worked free of the ropes still binding me, stepped close, and spoke.
"Please, don't struggle. This room assigns the tentacles' abilities to match the intruder's. On your own, you will never escape."
"Kh... filthy wretch... kill me..."
Humiliated beyond bearing at how emptily she had been caught, she bit her lip and shouted for death. I reached out and began to caress her breasts.
"Hnn❤️"
"Tits... they really are huge..."
As I toyed with her chest and appraised it aloud, tears welled in Lise's eyes.
Soft. Heavy. Pliant. Yielding.
I avoided only the nipples, fiddling and toying with everything around them, and before long a red flush had risen on Lise's face. Small moans were slipping out of her as well.
"Hnn❤️... nnh❤️..."
By then the tentacles had stripped her completely and pressed her body flush against the wall. I drank in the sight and kept fondling her breasts, and when I studied her face, Lise's moans rose again.
"Nnh❤️... haaah❤️ nngh❤️"
"Oh? You just came, didn't you? I'm right, aren't I?"
"......I did no such... ooohk❤️"
She turned her head and denied it. For the first time I flicked the stiff, erect pink of her nipple as if plucking it, and the red-haired knight Lise squirted and came with pathetic ease.
"You should give up. The tentacles binding you store every climax you feel. And the next time you come, every climax you've already had stacks on top of it..."
At my words Lise hung her head in despair. Then, as if something had occurred to her, she opened her mouth.
"I will believe everything you said! That you were kidnapped by Kalzeon, and that you are blameless—I shall believe it all... so hurry and release—"
"Hm? I don't want to. If it were a moment ago, who knows. But why would I let go of a cow-titted knight I've already caught?"
"Cow-tits... heh heh... you too, just like Kalzeon... hoh❤️ nnn❤️ oooohk❤️"
To shut the mouth that looked ready to pour out still more condemnation, I ravaged her breasts again. Every climax stored until now crashed over her at once, and Lise met her peak squealing like a pig.
And then another alarm began to ring inside my head.
Intruder captured!
Intruder captured!
Intruder captured!
"Huh...?"
And just like that, on full auto-hunt, Kim Dong-wook added one more bitch to his collection.