[Iroha confessed to the Isshiki couple that Miri had learned from her that she could no longer conceive.]
[She felt immense guilt and accepted all the blame from the Isshiki couple, keeping her head bowed and silent throughout.]
[You stopped the Isshiki couple from continuing their reprimand.]
[You explained that such matters would eventually come to light and could not be hidden forever.]
[You then called Iroha to her room for a long conversation, offering her guidance and comfort.]
[You spoke gently.]
[To her, you were still the same as before—the good older brother who accompanied her through her childhood and youth, showing boundless tolerance for her actions.]
[But she was no longer the child she once was. The more you showed this one-sided tolerance, the more it made her feel anxious and unsettled.]
[You were always the one considering her feelings and thinking about her, but she felt powerless, unable to reciprocate, and had committed such a serious mistake that it hurt you and your two loved ones—one losing the ability to be a mother and the other passing away passively.]
["I am, without a doubt, the sinner."]
[She said this, but you interrupted her firmly.]
[For the first time, you showed such anger in front of her.]
[You scolded her loudly, but instead of frightening Iroha, it gave her a sense of being rescued.]
[She threw herself into your arms, crying and repeatedly saying sorry.]
[She was incredibly relieved that you hadn't been crushed by these misfortunes and were still the strong, kind, and gentle older brother.]
[You rested your chin on Iroha's head, inhaling her fragrance, feeling her mature body—so different from her school days—smiling slowly.]
[Once Iroha had calmed down, you asked her to help take care of Miri during the day while you would take over after work.]
[Iroha wiped her tears and earnestly agreed.]
[She wanted to make amends for her past actions and hoped that you, such a good brother, could return to a normal and happy life.]
[But things were not as simple as she thought.]
[The seemingly calm surface concealed turbulent and dangerous undercurrents.]
[The reward you promised Miri had been long overdue, and you finally began to formally deliver it to her.]
[Miri started showing visible signs of injuries on her arms and legs—evidence of the private "rewards" she desired when you were intimate with her.]
[You had a subtle S tendency, while she experienced pleasure from pain, which was one reason why she was so compliant with you.]
[The Isshiki couple and Iroha discovered these injuries. Under their repeated questioning, you revealed the "truth."]
[At the dining table where Miri was absent, you informed them that your wife's mental state had recently become unstable.]
[It seemed she had reverted to the state she was in when she first learned about the baby's absence—easily angered and occasionally self-destructive.]
[Iroha's chopsticks fell to the ground.]
[The Isshiki couple looked deeply worried.]
[You reassured them not to worry.]
[You had consulted a psychologist, and as with the previous doctor's advice, Miri needed the company of family.]
[As long as she stayed cheerful, she would gradually recover.]
[You then formally asked Iroha, who was out of work, to help take care of your wife during the day, with you taking over in the evening.]
[This suggestion was accepted without question by the Isshiki couple.]
[Iroha also firmly assured you that she would keep a close watch on your wife and prevent her from engaging in self-destructive behavior.]
[You nodded with reassurance.]
[Afterwards, Iroha's meticulous care for Miri extended to even waiting outside the bathroom and preventing her from using scissors or knives on herself.]
[As time passed, just as you had said, Miri's condition seemed to gradually improve.]
[She could control her emotions and no longer became easily angry or tearful. The injuries on her body healed without new ones appearing.]
[Iroha, who had been tense for so long, began to relax as Miri's condition improved.]
[At night, after intimacy, you held Miri and lightly bit her skin.]
[This mild pain did not satisfy her, making her feel like it was just scratching the surface, so you increased the intensity, satisfying both yourself and her.]
[First-person perspective…]
In a dimly lit bedroom with only a small nightlight.
After intense stimulation, the body was left trembling uncontrollably.
Miri lay on the bed, gasping for breath.
She realized she could never be apart from this man.
Chisato got up from the bed, took a wallet from the closet, and placed two cards on the bedside.
Miri watched your actions in silence.
"Everything is ready. Stick to the original plan. The password is your birthday. We won't meet for a while."
He paused.
"Take care of yourself."
"I can't bear to part with you. Can't we delay the plan a bit more?"
Miri pulled him down to lie beside her and nestled her soft body into your arms.
Chisato looked at the ceiling with little emotional expression.
"Whether sooner or later, the result is the same."
Miri was silent for a while.
"What if I miss you?"
"I will call you, but you must not contact me first."
"I understand… Can I hold on to a small hope that you and Iroha will come looking for me after being together?"
Chisato looked down at Miri in his arms, showing a faint smile with little emotion.
"Maybe."
[The next morning, you brought Miri to the Isshiki home. After ensuring she was handed over to Iroha, you drove to work.]
[Iroha and Miri had breakfast together and watched some TV.]
[Around nine in the morning, as usual, they prepared to go out to the supermarket to buy groceries and cook.]
[However, while Iroha went upstairs to change clothes, Miri vanished.]
[A note was left on the coffee table in the living room.]
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