Soaked in water and taken out several times.

    As he was starting to lose consciousness, Mayhen started to strangle Hyunho.

    “Ke, kekeke. Ugh…”

    “Are you kidding me? You could really die if you do that.”

    And the next acquisition.

    Mayhen grabbed Hyunho’s neck with one hand and held it down until his head touched the bathroom floor.

    ‘Hey, save me…’

    I struggled hard to survive, but ultimately failed to escape.

    The loud splashing sound of water in the bathroom became quieter as time passed. When the water surface that had been so turbulent became calm, Mayhen muttered.

    “Hmm… Is it time to do it?”

    Mayhen pulled the unconscious Hyunho out.

    Hyunho, who was hanging limp like a puppet with his strings cut, was in a dazed state due to continued oxygen deprivation. Mayhen’s goal was to create a state where he was on the verge of losing consciousness like this.

    With this, the preparations are complete – thinking so, Mayhen began to strangle Hyunho’s neck with both hands.

    This time, in order to forcefully awaken consciousness, he even exhaled life force.

    ‘Hmm… I don’t want to leave a handprint on your pretty neck. Should I have used a string?’

    ‘Die, really die.’

    While they were having conflicting thoughts, Hyunho, stimulated by Mayhen’s murderous intent, instinctively threw a punch at the face in front of him.

    Bam-

    The final blow that squeezed out every bit of strength he had – it was far more powerful than his usual power.

    Mayhen, who was hit in the jaw, shook with shock and let go of Hyunho’s neck. No, it would be more correct to say that he let go.

    This is because Hyunho was only exerting a little more force than he could muster from the beginning. If Mayhen had exerted all her power, her final struggle would have been meaningless.

    Hyunho threw himself out of the water the moment Mayhen fell away.

    Iron fist!

    “Eek… Eek… Huh, Huhh…”

    Perhaps because he had just used up all his strength, Hyunho appeared to stand up on both feet, but then collapsed.

    with a splash-

    “Ugh, I don’t like it… I don’t like it…!”

    What I hear is the sound of someone in the water getting up. It’s Mayhen recovering from the shock and getting up.

    Hyunho began to crawl towards the door on both hands and feet. At the same time, the sound of someone walking on the wet bathroom floor could be heard behind him.

    “Don’t come near me, don’t come near me!!”

    “…♪”

    What was so fun, Mayhen hummed as she slowly approached.

    The sound of the song was getting closer and closer – Mayhen had already come right behind Hyunho. Hyunho had a gut feeling that death was coming – but that didn’t happen.

    “Right! Well done.”

    “Uh, uh?”

    Mayhen hugged Hyunho, who was trembling. Hyunho squirmed as if he was having a seizure when Mayhen’s skin touched his body, but Mayhen only stroked his head more gently as he did so.

    Hyunho was gasping for breath, unable to breathe properly due to fear.

    “Hoo- hoo- Take a breath. Are you really surprised? ”

    “Poem, I hate it… Help me! Save me!”

    Mayhen gave Hyunho enough time to come to his senses. The murderous intent that had shot out at him as if to kill him had long since disappeared, and she was kneading his trembling arms and legs with maternal hands.

    It was about twenty minutes later that the two resumed a proper conversation. It was when Mayhen massaged his tingling hands and feet and Hyunho came to his senses.

    “That’s it. …Why on earth did you do that?”

    “First of all, it is to let you know that there is no need to rely on doping agents.”

    That’s not a doping agent. Oh, I said it was a doping agent. Ha…

    “There are many types of doping. If it’s the type that causes aftereffects like weakness due to exertion, you don’t necessarily need to use drugs. Like the punch Hyunho threw just before he died, right?”

    That’s right… Me? Actually, I don’t remember very well.

    “Then there is no need to use doping drugs anymore, right? You just need to recall the feeling of your body exploding with power for a moment. If you don’t remember…”

    Oh, now that I think about it, I think I remember. No, I definitely remember.

    At that time, I really thought I was going to die. But if it was just to awaken my survival instinct, there was no need to put my head in the water.

    “When Hyunho just showed you something that makes you think, “I’m going to die,” that’s because it’s an ability that knights who dramatically come back from the brink of death sometimes show. My older sister also learned it when her parents pushed her off a cliff.”

    “But now that Hyunho is alive even after he dies, I think his survival instinct might be weak. So if he’s in a dazed state due to lack of oxygen, he’ll forget about it… When I saw Hyunho suffering, my heart ached so much.”

    Pushing your own daughter off a cliff? Mayhen’s parents are clearly psychopaths. They created a monster. If I ever have a disciple in the future, I will never repeat this evil practice.

    Now I really want to go to my room and sleep. I’m glad he’s not really trying to kill me. But… what if I failed in my last desperate attempt, wouldn’t I really have died?

    “What do you think of your sister? There’s no way your sister would try to kill Hyunho. If she did, it would be a bit longer…”

    I’m really glad it ended in one go. Yes. Even though Mayhen is a bit rough, she’s not the type of person to harm me. It’s true that she grabbed my neck and threw me into the water, but it’s also true that she carefully massaged my trembling hands and feet.

    …Actually, it was creepy how skilled he was at submerging people in water.

    “And we’re not done yet.”

    Mayhen hugged me and began to massage my body as she explained the three-step treatment plan she had developed.

    First, to be able to achieve similar effects without using doping agents, as we just did. Eliminating the need for doping agents.

    And the second and third is to teach the body not to use doping agents on its own, even without other observers or physical force.

    “So, should we go into the water to make ourselves unconscious again? It’s a skill that our instincts learn in extreme situations, not when we’re fully conscious.”

    “Poem, I hate it!”

    When it seemed as if the water torture was about to begin again, I pushed Mayhen away and crawled towards the door on all fours.

    Mayhen dragged me into the bathroom while holding my ankles as I lay face down, and brought my face close to the water again.

    “Poetry, I hate it – I don’t want to, water, I’m scared.”

    “Are you afraid of water? You shouldn’t be…”

    If another phobia develops during the treatment process, it could cause problems later. At the same time, Mayhen thought that it wasn’t a phobia yet, but rather something she disliked, so she immediately decided that she could use it for training.

    “Then let’s do this. I’ll make it so you don’t think you’re in the water.”

    “Ugh… How?”

    Like this – Mayhen locked lips with Hyunho and fell towards him.

    with a plop-

    Hyunho entered the water just like last time. The only difference was that Mayhen also entered. And Mayhen was kissing him.

    Bogle- Bogle-

    While kissing, Hyunho naturally exhaled the air in his lungs. Mayhen continued to consume oxygen by biting Hyunho’s tongue with her lips and pulling it.

    Three minutes passed as they licked their tongues like that. As Hyunho’s face began to turn pale, Mayhen lifted her head for a moment to take a breath.

    Whoosh- splash!

    Then she approached Hyunho again and kissed him from the side.

    Bubble bubble- Bubble bubble-

    A large number of air bubbles, big and small, rose from between their lips. Mayhen gave air to Hyunho, who was unable to breathe, through her mouth.

    ‘Don’t just breathe, focus on me, sister-‘

    Mayhen tapped her lips with her index finger and conveyed her meaning with her mouth shape. When I nodded, Mayhen smiled and reached out her hand to my vagina. Then she circled her finger around it.

    Phew- Phew-

    A technique that had been shown in the past. A technique that rotated water with intention was unfolding above my vagina. The water moved according to Mayhen’s fingers, twisting and squeezing my vagina up and down.

    “Pah-”

    The stimulus was so embarrassing that I ended up spitting out the air in my mouth. Mayhen frowned slightly and went back outside to get some air.

    He said, “Boggle,” and then he put air into my mouth, and then he communicated his meaning to me through the shape of his mouth again.

    ‘Since your older sister gives you air at just the right time, don’t spit it out recklessly♡’

    I was being controlled by the breathing that humans naturally need to survive.

    For thirty minutes, I depended solely on my older sister to breathe.

    The stimulation given from below was repeated in a strong and weak way, cleverly controlling ejaculation just before climax.

    It wasn’t just the ejaculation that my sister was controlling. She was also slowly taking away my right to breathe. At first, she brought me air as if I was breathing from outside, but little by little, she was reducing the supply to the point where even I, who was breathing, didn’t notice it.

    ‘Sister, I want to fight.’

    As the stimulation continued to the point of climax, I felt like I would cum just by touching the water current. Then my older sister calmed the water current touching my vagina with her hand. After repeating this teasing a few times, I became a doll that kept repeating ‘I want to cum’ with my mouth. Even in a situation where my vision was darkening due to lack of oxygen, I was only begging for ejaculation.

    Mayhen, who saw Hyunho’s face, who was repeating the phrase ‘Ejaculation, ejaculation…’ with her eyes wide open, smiled and went out of the water for a moment.

    And along with oxygen, he brought something familiar to Hyunho.

    ‘Should I give you a discount? Should I give you a shot?’

    Yes. In the first place, Mayhen had never gone to Kuzunoha with a syringe. When he saw Kuzunoha smiling suspiciously, he decided to treat her himself. If Hyunho hadn’t used the syringe before he went to bed, he wouldn’t have known…

    ‘Wow- It’s a shot-‘

    Whether it was due to lack of oxygen or withdrawal symptoms, Hyunho couldn’t see Mayhen’s mouth this time. When the injection came into view, he looked in that direction as if it was natural and reached out his hand.

    Mayhen frowned for a moment, then smiled again. Then she pulled Hyunho out of the water.

    “Yes, you chose the injection-. Right, Hyunho?”

    “Injection, I want an injection.”

    Hyunho seemed to have quickly forgotten what had happened to him, and when he saw the syringe in front of him, he focused on it.

    “Okay, I’m going to give you a shot – yuck!”

    “Wow- Phew!”

    Mayhen injected a syringe into Hyunho’s arm. Instead of pressing the piston, she grabbed Hyunho’s neck and put his head in the water.

    “Phuh! Phew! Sob!”

    I didn’t realize it when I was in the water, but when the Mayhen I saw in front of me disappeared, I could see the blue water inside. The bathroom floor was made of a material like a mirror, and through it I could see Mayhen’s cold eyes. The murderous intent that was gently radiating out reminded me of the fear of water that I had forgotten.

    “Okay, wake up~”

    “Heh, heh, haak- Wait a minute.”

    “Inject again~ Kkuuk!”

    with a splash-

    This time, Mayhen only inserted the needle into Hyunho’s arm and did not press the piston. Instead, she grabbed Hyunho’s neck and threw him into the water.

    The depth felt almost twice as deep because the floor was made of mirrors. Mayhen’s gaze, looking down from above, looked like the eyes of a devil rising from the depths of the ocean in the mirror.

    “Get up again.”

    “Wrong, wrong… Stop, stop…”

    “Inject again~ Kkuuk!”

    with a splash-

    The intake continued. The lack of oxygen became more severe, and her body began to tremble and her hands and feet began to become numb. But Mayhen did not stop.

    I tried to struggle like I did last time when I escaped, but this time I couldn’t move an inch. This time, Mayhen didn’t let up. All she could do was plead.

    Splash- “Huh, huuuuk.” Splash- “Phu-Phu-Hold on- ”

    .

    .

    .

    “Injection, injection, injection…! Injection, injection!”

    “Right, then I’ll ask again.”

    When Mayhen tried to put the needle in his arm again, Hyunho shook his head from side to side and denied it vehemently.

    The side of Hyunho’s face was pale due to being repeatedly thrown into the water, but the center of his face was red and swollen. This time, Mayhen gave Hyunho a little more time to breathe.

    “Do you want to cum, or else…”

    “Ejaculation! I want to ejaculate! Please let me ejaculate!”

    “Oh my, you did a great job~”

    Mayhen reached out from outside the bath and grabbed the syringe. Then, with a crunch, the glass was finely ground into powder, not shards, and flowed down the drain.

    Then, he roughly washed his hands with water and began to explore Hyunho’s trembling body. Hyunho also actively… clung to his older sister and shook his waist.

    “Ugh, ugh… I need a shot, I’m going to cum…♡”

    “Treatment completed♡”

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