BAD ENDING 004: The Tamed Mare
Riri slipped Sonia's already stiff, swollen nipple precisely between her big toe and second toe.
Then she clamped down on the root of the nipple with her toes and began to press her weight into it — slowly, deliberately.
"Ah… my chest… it's getting crushed…♡ It feels so good…♡"
What burst from Sonia's lips was not a scream of pain, but a cry of pure ecstasy.
The crushing pressure and the sharp, piercing pleasure that bored into the most sensitive part of her nipple tangled together until her mind went white and distant.
With Sonia lying helpless on the floor, Riri kept the nipple and areola trapped between her toes and bore down with her full body weight.
Like a ripe peach being crushed. Like soft, risen dough being kneaded flat. Riri's pale bare foot sank deep into Sonia's milky-white breast. Under the pressure, the pink areola — swollen with heat — and the overflowing flesh of her breast bulged out between Riri's toes and up over the top of her foot.
"…Sonia unnie… gulp…♥"
Riri swallowed hard without meaning to. Beads of sweat had gathered across the hot, flushed skin of her aroused warhorse, glistening like natural oil over that pink areola. Looking down at it, Riri felt an impulse she could barely restrain.
Not twisting it with her toes — she wanted to dig her fingers into it. No. She wanted to set her teeth against it and bite down, hard and slow.
"But… until you're in the mood to sign the contract… I think I'll try a little harder?"
Riri whispered it in a deliberately teasing voice. The contract was already prepared.
She simply wanted to savor the process a little longer — the perfect specimen being thoroughly broken in beneath her feet.
"The… con… tract… write it… this pleasure… Riri-nim…? Riri-nim…♥ The contract… please… haah…♡ hnghh…?!"
Sonia's mind already seemed completely gone. The moment she heard the word contract, she looked ready to throw away her identity as a D-class hero and sign an exclusive agreement with Riri as a female warhorse.
Caught in the waves of pain and pleasure from her nipple being crushed and twisted under Riri's toes, the warhorse Sonia — who ought to have been proud and composed — could not finish a single sentence. All she could do was gasp for breath.
Riri shrugged as if she had no choice, deciding she would rough up this sweet finishing process just a little more before handing over the exclusive contract.
"The contract… please… Riri…-nim…♡ huff…?! huff…? hyaah…?!"
"Twisting a nipple with your toes… is surprisingly hard. Sonia unnie's breasts are soft, but they're also pretty firm. If you'd been flat-chested, I might have gotten a cramp in my foot…?"
Riri said it in an innocent voice and put more force into her toes. Sonia's nipple bent nearly ninety degrees and twisted, and her hips only twitched in response.
In the living room of Riri's house, two beings remained. One: a female warhorse staring at the ceiling with eyes that still held light but had gone hazy with pleasure, her nipples twisted vertically twice over. The other: a genius trainer looking coldly down at her, admiring her own work.
The idol costume that had once been called a battle uniform — the one with the glowing purple LED lamps — no longer meant anything.
The top had been stripped off and crumpled on the floor. A female warhorse, smiling with a slack, blissful expression up at the "Trainer-nim" who was now trampling her chest instead of her head. Looking at that utterly happy smile, Riri's heart pounded beyond her control. It was the hunger to dominate.
"…♥ So… Sonia unnie. Could you… do this for me? …If… if it's too much, I'll do it myself…!"
On a hopeful impulse, Riri gave an order she was a little embarrassed about — but desperately wanted to confirm.
She added that it was fine if Sonia was too shy to do it, but that was only formal consideration. The real meaning was clear: she would make it happen herself if she had to.
A soft murmur… a tiny whisper that seemed meant for Riri's ears alone. At that command, Sonia's body gave a sharp little shudder.
It was not a gesture of refusal. It was the faithful response of someone who understood her master's order and meant to carry it out. Above Sonia's head right now, four black heart gauges — packed tight with obedience and loyalty toward Riri — floated into clear view.
Four pitch-black hearts floating just above the brown warhorse ears that had sprouted from her blonde hair. How far a warhorse in this state would go to meet her master's expectations — Riri, Sonia's new trainer, was burning with curiosity.
"L… like this… Riri…? No… from now on… I should call you… Master…♡ …right…?"
Sonia's voice trembled, but what filled it was not hesitation — it was certainty and joy.
Riri's whisper had been something too embarrassing to say out loud. A change of address. From now on, Sonia would call her "Master" instead of "Riri."
It was not a simple change of title. It was an order to acknowledge, herself, that their relationship had completely transformed.
"Ah… thank you for taking in a female warhorse who knows nothing… Master…♥ From now on… please educate me… with pleasures I've never known…?"
Sonia reached for the waistband of her purple battle-uniform panties — now nothing but an obstacle — and hooked her fingers under it. She pulled them down without a moment's hesitation, and her sex, glistening with wetness, was bared to the open air.
As if flaunting that lewd, private place, Sonia — still lying on the floor — lifted her legs all the way up beside her head.
A W-spread, thighs gripped tight in both hands so they would not fall. The posture the Horse Spirit had taught her — the one that showed absolute obedience and trust toward her master. This was what D-class hero Sonia looked like now.
"Haa… haah…♡ Master… please punish this lewd warhorse Sonia… who couldn't even wait for you to come back…♡ Please enjoy me… this filthy mare who got so excited waiting for Master's training that I ended up like this…♡"
A clear system message visible only in Riri's field of view. Four black hearts floating gently above Sonia's head — packed so full there was no empty space left to see.
Proof of her loyalty, obedience, and affection toward Riri-nim — no, toward Master — given physical form. The other mare-girls Riri had trained in the past had followed every order, completed their training, even won races, and still barely managed to fill a single heart.
"F… four of them…"
Riri muttered it without thinking. Not one heart — four. This was talent on a completely different level. Instinctively, without anyone needing to tell her, Riri knew a fifth heart would appear soon.
This was what had happened in the brief moment she had left a thoroughly tamed warhorse alone — just long enough to step away and fetch the finishing tools.
"Master…♡ Please step on Sonia's chest…♡ And… look… at this lewd, pathetic pussy… made only for Master…♡"
Lying on the living room floor, she had lifted her legs up beside her head so her thighs were fully exposed, then gripped them tightly with both hands so gravity could not pull them down.
Sprawled on her back, offering up her pathetic pussy, shattering every last scrap of the gentle hero-unnie image that had helped her only a short while ago — Sonia's appearance was shocking, and utterly captivating.
"I should have waited for Riri-nim's permission…♡ But my body went into heat on its own… I'm a filthy warhorse Sonia who stripped her clothes off… I've taken them all off like this…♡"
"U… unnieee…♥"
A voice mixed with involuntary awe and excitement slipped from Riri's lips.
"This lewd warhorse who goes into heat without even being able to hold back… Sonia… Riri-nim… Master…♡ Please punish this lewd warhorse Sonia…♡"
The truth hidden behind the plausible pretext of an "undercover investigation." The cool, impressive hero-unnie who had claimed she was on a mission was gone.
What stood before Riri now was a single wild warhorse who needed a master — who urgently needed training. Sonia, and nothing else.
Golden eyes with a slight noise-like blur to their focus. At the center of each, a heart-shaped pupil floated sharp and clear. Those eyes, wet with pleading tears, sought only Riri — clinging to her Master alone.
Legs raised, thighs held open, offering the deepest and most secret weakness of a female body without reservation to her Master — to a younger girl she had known for less than a day. She was no longer Sonia. She was a masochistic slave, pure and simple.
Ah… just a little while ago, in front of the exchange staff, Sonia unnie was acting so dignified… and now… she's turned into a total pervert like this… This is the best…♥
Riri trembled at her own ability. A taming privilege that worked only on warhorses — and, faintly, on related species like mares. That power had made her famous as a genius mare-idol trainer, but she had never seen an effect this strong.
Riri herself did not realize that this taming — this charm effect — was in fact a powerful form of mental interference, closer to hypnosis or brainwashing.
She simply, naively believed that the atmosphere had carried things along, that Sonia's original nature had erupted, and that was why she was showing off her lewd, pathetic pussy and calling her Master.
Looking down at the perfect female warhorse before her, Riri was moved. I'll show you the perfect finish… unnie! she thought, content with a relationship that had already begun to tilt just slightly off-center.