Ste, the blonde tsundere younger sister from "OnaAka," had recently been experiencing a dramatic change of heart. Her feelings were different from those of Serena, who had always been in "I love you, Sang-hyuk" mode since the beginning. At first, Ste felt hatred, whichter turned into curiosity.


    ''Perhaps Sang-hyuk has been trying his best all along,'' she thought.


    She used to believe that whatever happened to him was none of her concern. That changed when they tackled the zombie apocalypse dungeon together. Sang-hyuk, whom she had once dismissed as a D-ss individual, proved not to be a coward; he even helped her when she needed it.


    This series of events brought about many changes within Ste. The most significant shift was epting Sang-hyuk, whom she had blindly detested, as a member of her family. Up until that point, Ste''s family consisted solely of her mother and Serena.


    While not from a prestigious background, Ste had always been proud of her remarkable talents and the fact that they were a family. That pride persisted until D-ss Sang-hyuk entered the picture.


    The inept older brother had always been a source of irritation for Ste, but...


    "If anything happens to Mom, I''ll make sure to provide for you and Serena."


    When he uttered those words as he stepped out of the entrance,


    Ste was astonished to realize how much her feelings had changed.


    ''…Am I really going to take responsibility for him?''


    Her brother, whom she had only regarded as a hindrance in her life,.


    Merely a month ago, she despised him so deeply that she wouldn''t have felt a shred of remorse if he had died. Now, she couldn''t even recall what kind of person he used to be.


    Undoubtedly, he''s still a perverted brother.


    Trying to sneak a peek at his sister''s underwear...


    Yet within him, there was a tenderness she had never experienced before, and it had melted Ste''s heart.


    ''Worrying about an A-grade issue for a D-grade person. Howughable.''


    Before she knew it,


    Ste found herself wanting to support even her dysfunctional brother.


    After all, they were family.


    ''There might be people who can''t seed, even if they try.''


    She had no choice but to look after her D-grade brother.


    And with that, the situation became a bit moreplex.


    "Coin"


    In our society, the importance of coins cannot be overstated, and emphasizing them only brings pain.


    Everything one needs to survive stems from these coins. There is even a saying that, as long as you possess coins, you can ovee any challenge—even when on the brink of losing your life in a dungeon. This is due to the transcendent being who gathers coins: the "Devil Merchant."


    The Devil Merchant deals in stats as well.


    Ste had reached the limit of leveling up in D- to C-ss dungeons. To grow stronger, she needed to learn how to negotiate with the Devil Merchant.


    A named magical beast with the grace of an external deity? It''s a lottery that one might have the chance to experience once in a lifetime, if at all. There''s no point in getting one''s hopes up.


    Ste was faced with two choices:


    To remain in the academy and advance to the third year,


    Or to drop out, be a hunter, and amass wealth.


    "I can''t keep burdening Mom."


    She still hadn''t paid off the mortgage on their home.


    Tears filled her eyes at the thought of her mother, who had to care for three grown-up children.


    Serena still possessed immense potential for growth within the academy, and because of this, she needed to continue her studies. Her older brother, a ss D, wouldn''t provide much practical help, but Ste still nned to live with him. In order to make it work, someone had to assume the role of head of the household.


    Ste needed to earn money. To be honest, dropping out before reaching the third year would be akin to discarding a perfectly good meal.


    "It''s okay. We have Serena at home," Ste thought.


    Ste wished that Serena could simply walk along a path of flowers, adorned with the title "from a prestigious family." Ste spent the weekend organizing her thoughts.


    "I can do this," she assured herself.


    Wasn''t this her original n? To be a hunter, support Serena, and pay for both her own and Serena''s tuition. By sleeping only three hours a night for a single year, she could achieve it all. The fact that Ste had to support her older brother as well wasn''t part of her initial n.


    Ste was determined to make it work. As she recalled her caring older brother, she made a promise to herself.


    The wind on the rooftop was cold.


    *Ring.*


    "Oh, how I wish I had 50,000 coins right now," she sighed.


    Master Hunter, I desperately wanted to attend Teacher Seridwen''s ss.


    It was at that moment that Ste let out a lengthy sigh.


    [Kim Sang-hyuk]


    Kim Sang-hyuk has sent 300,000 coins.


    [Ste]


    ?


    [Ste]


    What is this?


    It was just a little past lunchtime.


    Ste was so startled that she nearly dropped her phone.


    Naturally, she didn''t think, "My ss D brother has worked hard and earned money."


    It''s 300,000 coins.


    This isn''t an amount one can earn by merely running a few 3D dungeons at the academy.


    However, the coins deposited on the student ID were real, and Ste was thrown into a panic.


    "Did my brother sell his organs?!"


    Ste''s panicked thought process became intricately entangled, leading her to a very simplistic conclusion.


    She rushed to ss F and immediately searched for Sang-hyuk''s girlfriend.


    "What''s going on?"


    "Do you happen to know who my brother''s girlfriend is?"


    That''s when Henna and Yuuna appeared together.


    "Why are there two girlfriends?"


    With no time to ponder such a question, she inquired about her brother''s whereabouts.


    "If it''s Sang-hyuk, he must be with the student council president right now."


    "I was summoned by the president."


    No way.


    Ste''s heart plummeted.


    "A blemish on our academy. This is the only way for you to contribute to society."


    "Aaaaaaa!! No! Don''t slice open my stomach. Please! I''ll live a good life without penalty points from now on."


    The imagined student council president smirks sinisterly.


    "Now? It''s toote! Let''s see what color the blood of a potential criminal is!"


    "No, no, nooo!! Save me, Ste! Our adorable Ste-chan! I''m going to die!!"


    Ste, gasping for breath, hurried to the student council room.


    She happened to run into the student council president in front of the room.


    Even with Isabe present, Ste was in no state to be formal now.


    "Kim Sang-hyuk''s sibling?"


    "Where is my brother right now?"


    "…"


    "Where is he?! I''m warning you, even if my brother is a pathetic D-grade student with a ton of penalty points... I won''t let it slide if you take him away!!"


    "He''s in the infirmary."


    Having confirmed that Ste was not in a state to listen attentively, Isabe promptly directed her to where Sang-hyuk could be found. Thus, Ste was able to rush into the infirmary more quickly than anyone else.


    "It''s just a minor injury from the dungeon. I didn''t get involved in anything serious like selling organs."


    As the misunderstandings were dispelled, an overwhelming sense of relief washed over her. Ste sobbed, nestled in Sang-hyuk''s strong arms.


    "How did you get hurt?"


    "I was trying to work a bit harder than usual."


    "You fool… Don''t push yourself too hard. Think about leaning on me instead! If something were to happen to you, I I couldn''t bear it."


    In that moment, Ste realized a truth about herself that she hadn''t been aware of before. The thought of supporting her brother in her already harsh life made her realize how lonely and empty she would feel without him. As she was embraced in Sang-hyuk''s sturdy arms, Ste felt a sense of meltingfort.


    ''I wonder if having a father would have felt this reassuring.''


    Ste''s thoughts wandered to the unknown father she had never met.


    "What color are your pants today?"


    "…"


    Surprisingly, Ste didn''t even feel angry.


    Just a month ago, it was a perversion she had loathed, but now Ste finds herself ted by it.


    "Pink…"


    She lifted her school uniform skirt to reveal it.


    Ste harbored boundless generosity towards her brother, Sang-hyuk.


    Seeing her grade D brother lying down, injured from working so hard to earn an absurd amount of money, and connected to a healing serum,


    feelings of admiration, a desire to care for him, and a longing to erase all his worries and bring him happiness welled up within her.


    Except when they were joking around or being embraced in the dungeon.


    This was the first time they had shared a genuine embrace.


    Ste found herself loving the warmth of Sang-hyuk''s arms.


    Everything about him became endearing to her, from his head to his toes, even his masculine scent and the sound of his voice.


    As she rxed into his embrace, Sang-hyuk''s erect cock brushed against Ste''s body.


    ''…Did this happen because of me?''


    It wasn''t an unpleasant feeling at all.


    Far from disgust...


    Ste even felt a sense of pride in being his "little sister."


    Perhaps there was something a woman could do in a moment like this.


    "… Are you ufortable? What can I do for you?"


    "Ste?"


    If you promise to do anything,


    What will my perverted brother ask of me?


    "I''ll help you. Just a little."


    …


    Ste quickly regretted her actions. What was she thinking?


    The gravest sin was being caught by the diligent Serena.


    ''What must Serena think of me?''


    Though I used to grit my teeth and express hatred for my perverse brother,


    I ended up stroking his cock myself and even assisted him in reaching climax.


    It was all the more frightening that Serena hadn''t yet struck me.


    I can''t tell what she''s thinking.


    "Ste. What should we have for dinner tonight? Brother ising home after finishing his work."


    "Well, I''m not sure."


    "Even though we''re a little short on money, I want to have a luxurious dinner with the family."


    Upon hearing Serena''s worries, Ste moved as swiftly as lightning.


    She briefly exined the events of the day—excluding the sordid details—and


    I entrusted the money to Serena.


    "Really? Is this the money your brother gave you?"


    "Can you believe it? I thought I had sold some organs or something."


    "I''ll go to the market again! We need to feed Big Brother better meat than hind leg meat!"


    "Yes, sure…"


    Tonight''s dinner is braised short ribs!


    Serena said so and went back to the market once more.


    "Heung Heung Heung?"


    Watching Serena humming while preparing the ribs for the pressure cooker,


    Ste''s thoughts became increasingly tangled.


    ''She''s not asking...?''


    She thought she was caught touching her brother''s cock in the infirmary.


    Could it be that her sister took care of the situation better than she thought?


    Perhaps Serena was too naive to understand the implications properly.


    ''That can''t be...''


    Even if Serena is focused on her studies, she must have received some sex education.


    But neither of the sisters has any experience with men. Even if they received confessions, they decided to respond with, "We can''t because our parents are strict."


    Most importantly, their brother is not a romantic interest.


    For Ste, this was a crisis that could ruin their family.


    "It''s so funny, Ste. Were you doing that with our brother behind my back? That''s really strange. Disgusting."


    In Serena''s imagination, she betrays Ste!


    ''Ugh…''


    She must find a way to mend the situation.


    Calling her brother and gently reproaching him. The circumstances were abrupt, and for the sake of their family, it was better to forget.


    and move on.


    Ste was prepared to disy a maturity that defied her youthful appearance!


    And the actual situation:


    "Yeah. I like you. Anyints?"


    Ste let go of her rationality.


    "I like him! I like him! I like him! What if I do? Until recently, I despised him with harsh words. That''s right.


    But now things are better. What can I do?"


    Indeed, at the moment, the only thought in her head was "I like him." ?.


    Speaking politely was simply too embarrassing.


    "I just eased my brother''s... hardness because it was so intense! As his younger sister, I can do that, right?"


    "Is that even possible? It''s not supposed to be..."


    "Ah, anyway…! I have no regrets. I have no intention of turning back."


    It was over.


    Just as an extreme choice crossed her mind, Ste unexpectedly received a back hug.


    "I like you too, Ste."


    Tightly.


    ''Ah.''


    Before Ste learned to reach climax by praising herself with her clitoral and nipples,


    She first discovered the bliss of climaxing in her brother''s embrace.


    Not knowing what this sensation was, Ste, mistaking it for happiness in her brother''s arms, trembled and shuddered, her thighs quivering.


    Regaining her senses, Ste found herself already


    pressing her rear against her brother''s firm cock to provide relief.


    "Since I told my little sister she''s lovely, do I have to take responsibility?"


    *


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