"If I want to marry my sister, what do I need? Going abroad? Or as long as there is a relationship in the civil affairs department, or there is no need to go through the formalities at all, as long as it is a long-term **, resulting in a de facto marriage. ”

The boy's eyes were very serious, and the pure black pupils stared at Su Jing tightly. Obviously, the person in front of him was only a half-grown child, but Su Jing felt that he had been forced into a corner. The fan on the roof and the ground floor was whirring and turning, and the heat made Su Jing sweat all over, which was very uncomfortable.

"You don't know what 'love' is, kid."

"There are incest between brothers and sisters in the myths of various countries, such as Nuwa Fuxi in China, Izanagi and Izanami in Japan, Osiris and Isis in Egypt, Zeus and Hera in Egypt...... It is a very common fact that in the time of ancient mythology, when ethics and morality were not yet fully established, it was a very common fact. And the establishment of this morality is also based on practical considerations, and the binding of homologous genes leads to the binding of recessive defective genes into homozygous...... The incidence of genetic diseases in the offspring bred by brothers and sisters is ...... in ordinary people."

"One hundred and twenty-five times. But that's not all the reason. Su Jing took a deep breath and tried his best to organize the language, "Incest among close relatives will cause ...... Mental age development is delayed. As a human being who is not yet fully developed, both physically and psychologically, there is one thing you fail to understand, and that is ...... You have a deficit in interpersonal functioning. Your mental function in dealing with others needs to be fully developed in your communication with others, you ...... You need to meet your own social needs by communicating with others, and your sister, who can provide you with this psychological need, blocks the interpersonal training you should have. You don't need to make friends, you don't need to be in love. And this lack will lead to a delay in your mental development......"

"Technically, as long as my sister is there. There will be no lack of subjective feelings between the two of us. The boy retorted coldly.

"Damn...... I can't believe I'm talking to you about this kind of thing......" Su Jing scratched her long hair frantically. Raising his palm high, he pointed at the boy opposite, gritted his teeth and asked, "So, let me ask you a question...... Is she sexually attractive to you? ”

“…… Sexual attraction? The boy raised an eyebrow on one side.

"Yes. You know the Westmark effect. Would you, feel, her sexual attraction to you? The answer is obvious, 'no'! She has no sexual attraction to you, although she is beautiful. And she is about to become one of the most beautiful girls in the world. But your feelings for her are the feelings between relatives, and there are many ways to protect her, why choose...... Most...... Most...... One of the most dangerous ways? ”

The boy looked at him coldly: "Then when Westmark was investigating, did he investigate even a pair of brothers and sisters who had mental stress?" ”

Su Jing was speechless.

"We are special. We...... It's impossible to separate, it's like two sides of the same soul, there is no pair of lovers in the world who can be so connected as we are, and from my deduction, I can't think of any other person who can insert himself into us. ”

There is still the possibility that one of them will disappear from this world completely. This sentence flashed in Su Jing's mind. Let his internal organs tighten as if they had been hit hard.

In addition, there is a negative effect in Westermark's theory, which is hereditary sexual attraction. If you don't live together in childhood, after you meet in adulthood. It may be because of the compensatory effect in genes that leads to sexual attraction between close relatives. If my sister and I are separated for a while, we may be able to develop our interpersonal skills at the same time. Sexual attraction to each other has been cultivated...... Why is your face so ugly? ”

“…… Is it? ”

Su Jing did feel that the blood on his face was rapidly fading. The boy on the opposite side stood in place. But it looked scarier than any monster, and he felt like a hard, cold rock to the touch. Was that the kind of person you used to be? He knows his own qiē, is this the embodiment of his inner demons?

"However, there is one thing I don't understand. That is, does interpersonal communication really work? Do I really need to have a girlfriend? The boy took a step forward, "What I want is not the same thing as what they want. I'm going to hurt them, and even though I just close my eyes and don't look at them, I still feel like I'm going to be sad. ”

Su Jing took a step back. The pale and handsome boy shed two bitter tears of blood from his eyes, but he himself seemed to be unaware, he opened the fairy tale book in his hand, frowned, and asked:

"The happy prince in the story will not feel pain as long as he closes his heart, and in fact, if he is still living happily in his palace, he will not be infected by the suffering of the outside world...... My sister and I just need each other to be able to live. As for the girls, they can be used to satisfy their desires, but I can't help but be attracted to them, and every time I hurt them, I feel the pain of tearing, and the same happiness...... The more I fall in love with someone, the more painful and happier I feel when I hurt her. I guess maybe it's because of the hurt I suffered when I was a child, maybe it's because I'm so ugly by nature? ”

With every step the boy took, the mark of a burning flame appeared on the ground.

"Are humans inherently so selfish? Or is this an inferior root in nature? I wanted to torture, bully, and abuse the people I loved, and feel that I had control over them. But in doing so, I felt pain again, pained by my ugliness and badness, and I wanted to exalt them to the top of the whole world, but I locked them hand and foot with the shackles called love. I want to cherish them, but I am controlled by my own despicable desires......"

Black flames lit up in the boy's eyes. Su Jing let out a long sigh, his originally pale face had calmed down. He stared at the boy in front of him and asked calmly:

"Are you my dark side?"

“…… In some ways, yes. The boy raised his head, "But in other words, I am also your childhood." Su Jing. I am the young you, only you can see your weaknesses, and I will uncover everything you avoid. ”

"But you also have a weakness, my childhood." Su Jing raised his index finger, "I'm more than a decade older than you, and I've experienced stories you can't think of." You are filled with the unfortunate experiences of the first half of your life, and your heart is full of dark and violent desires. But I'm different...... I have love from others. ”

Su Jing stretched out his hand and put it on the top of the boy's head: "The things in the world are not just the knowledge you see in books, in the future life, you will meet many interesting people." You recognize your extraordinary, but you don't recognize your ordinary...... You will meet people who can change you and make you realize that the world is not so boring......"

“……”

"Someday, you'll laugh at all the previous qiē. What seems very strict in your eyes is actually nothing more than that. Su Jing rubbed the young man's soft hair, "You are a very kind person, so you feel grief every time you hurt someone, so that in order to avoid this pain, you have learned to draw happiness from pain." I know, I've always known. You'll meet someone who understands your kindness, and as for your sister......"

Su Jing raised his head and looked up at the dark inner world sky. There are no stars, but the dark and lightless space is still vast. The fire beneath his feet was extinguished little by little, the crimson coals turned into hard stones, and the unstable barbed wire regrew into the rough concrete ground.

The world is collapsing, and the hot and filthy world is returning to the cold and lonely world of the table.

"If you really love her then, love her. Don't care what other people say, I know that the only thing you'll care about is someone you love. What Qianfu refers to is just a breeze, but those you love, if they are also opposed, then choose a path from them. Your intellect is not just for scientific research, but for your brain, when faced with the difficult problem of choosing two choices in life, people's 'abilities' are stored in order to open up a third choice. ”

The boy waved his hand away, thought for a moment and said:

"I remember what you said."

"Even if you hurt someone you like sometimes, it's ...... It's hard to avoid. There will always be stumbles in life, and it is very normal for arrogant people to stab each other. As long as you learn to be tolerant and understanding with others, and are willing to change yourself for the sake of each other...... Instead of giving up your ego, you respect each other and you will be able to get along well with everyone. ”

“…… I'll take note of what you say. ”

"Maybe this kind of thing needs to be experienced once to be able to understand." Su Jing sighed, "So, sue me, where is the sapphire?" I feel like it's time to get out of this place. ”

The boy grimaced, gesturing to his chest.

"Just kill me, and the sapphire will be yours."

Su Jing looked at him sideways, and the boy remained motionless.

"Kill you...... No, I don't want to do that kind of thing. Although you make me feel annoying, I have learned to understand and tolerate others, and I understand you very well because you are who you used to be...... I hate myself, but ......"

Su Jing squatted down seriously and looked at the boy at eye level:

"I forgive you. Even if I can't get that sapphire, I'm going to say, I forgive you. Su Jing. ”

When Su Jing finished saying this, the last piece of wall skin flew back to the ceiling, and the world was transformed into a surface world again. The rooftop was empty, and there was only a fairy tale album and a pencil left in front of Su Jing.

“…… Although I still don't like myself. (To be continued......)