Author's Note:
1. All characters mentioned in the story are over the age of 18.
2. Some content contains severe pornographic descriptions and some violent descriptions, please pay attention before reading
**********
John and Alice have been married for three years. They lived in the same neighborhood with Alice's sister Mary. The two sisters usually chatted a lot. The two families were very close.
One day, Alice said to John, "Dear, my sister told me that she hasn't had sex with her husband for a long time. It seems that they are now living a sexless life. Will we be like that in the future?"
John laughed and said, "No, I will always be fascinated by you for the rest of my life. I like every inch of your body. I like the feeling of making love to you, especially your big butt. I'm not like your brother-in-law."
Although John answered Alice like this in his heart, he secretly paid attention to Mary. Several times when Mary accidentally exposed herself, John feasted his eyes. In John's mind, although Mary was a married woman who had given birth to children, and her figure was not very good (women who have given birth usually have bigger butts), Mary had a pair of breasts larger and softer than Alice's, and a butt that was more exciting to have sex with. Just thinking about having sex with his sister-in-law one day made John extremely excited. It also awakened the evil side in John's heart.
However, this could only remain in his heart. He really wanted to tell Alice that he had sexual urges and fantasies about her sister. He imagined that Alice would help him and persuade her sister. But that was just wishful thinking. He dared not act on it because he was afraid of being scolded and misunderstood by his wife, which would affect their married life. However, as the days went by, John's incestuous desire became stronger and stronger. He was just unsure whether Mary would accept such a relationship; whether Mary had such an urgent need for sex. If so, his hope would be even greater.
Finally, one day, by chance, Mary told John that she wanted to watch the animated movie "Howl's Moving Castle". John wondered if he had it. At that moment, John made a decision. He decided to take a chance and follow his desire.
John found a day when only Mary was at home and went to see her. He said, "Sis, I borrowed the cartoon you wanted to watch from my colleague. Do you want to watch it?"
"But we have to watch it on the computer. I haven't transferred and burned the files yet. Can I borrow your computer?" Mary said without doubting him.
"Sure," John said. He then led Mary to the study. In the study, John turned on the computer and installed the portable hard drive. He then said, "Sis, do you want to see it first?"
Mary said, "Okay! Anyway, I have nothing to do now. I don't have to open the store until 12 o'clock."
Little did Mary know that this was a trap set by John. He deliberately put a few adult videos in the portable hard drive to arouse Mary's hidden desire. After installing the portable hard drive, John opened the directory and said, "Oh, what's this? How come there are other files? I don't know what this is. Sis, do you want to see it together?"
Mary said, "Well, whatever."
John sneered secretly in his heart. He opened the file. The computer screen showed a scene of a man and woman having sex. The woman was sucking and licking the man's genitals. This scene had a great impact on Mary, who hadn't had sex for a long time. What's more, the person sitting next to her was her sister's husband. It felt so strange. John also secretly glanced at Mary a few times and found that Mary was staring straight at the computer screen without any intention of turning it off. He knew that his plan was gradually taking effect.
After a few minutes, John said to Mary, "Sis, do you want to continue watching? I want to go to the bathroom."
Mary also felt embarrassed about her loss of composure. She hurriedly said, "No, John. How could your colleague also put adult videos in it? Turn it off."
John said, "Wait a minute, Sis. I really need to go to the bathroom. I haven't gone for a long time."
So John said as he stood up and walked to the bathroom. As he passed by Mary, Mary glanced at John secretly and saw a big bulge in John's crotch. Her lower body twitched unconsciously.
John went into the bathroom and began his next plan. He pulled down his pants to his knees and made loud noises, pretending to fall.
"Ouch, it hurts so much," John shouted in the bathroom.
Mary heard John's cry of pain outside and knocked on the door anxiously, asking, "What's wrong, John?"
"Sis, I fell down. I can't stand up. It hurts so much," John said.
"What should we do then?" Mary said.
"Sis, can you come in and help me up?" John said.
"Me? It's not appropriate." Mary said.
"But Sis, I really can't stand up. Come in and help me up! It hurts so much."
"Alright."
Mary pushed open the door and found John sitting on the floor in a mess. But she also saw John's erection.
Mary thought, "Wow, so John's little brother is so magnificent. It must be at least 15 to 16 centimeters long. The glans is big and red. I wonder what it would feel like if it entered my little hole." But because of her restraint, she still said to John, "John, put on your pants first."
John said, "Sis, I can't stand up. How can I put on my pants? Help me up first."
So Mary helped John up. John then took the opportunity to pretend to accidentally touch Mary's breasts, further stimulating Mary. The two staggered to the sofa and sat down. As soon as they sat down, Mary asked John, "Are you okay? Do you need to see a doctor?"
John said, "It's okay. I'll rest for a while and see. If it doesn't get better, I'll go see a doctor myself later. But Sis, I'm sorry I accidentally touched your breasts just now."
Mary blushed suddenly at John's words. She hurriedly said, "It's okay. You didn't do it on purpose."
John thought the time was ripe, so he quickly moved his body and sat next to Mary. He said to Mary again, "Sister, your breasts are really soft. If I tell you that I deliberately did it just now, will you be angry?"
Mary didn't expect John to be so bold and dare to say these words to him. For a while, she couldn't react. John continued, "In fact, sister, I have always had fantasies about you and have always secretly paid attention to you. I also know that brother-in-law rarely makes love to you, sister, don't you have any needs?" As John spoke, he stroked Mary's thighs.
John's words for a while made Mary not know how to answer, and John stroking her thighs made Mary's desire gradually overcome her reason. "Sigh, John, I'm a woman too, it's just that your brother-in-law doesn't want to, so... In fact, how could I not want to!"
"Then sister, I think I should be able to replace my brother-in-law to satisfy you sufficiently. If you are willing." John said.
"John, you are my sister's husband," Mary said in her mouth, but she did not intend to stop John. Because John's stroking felt so comfortable that it sent tingling sensations to her lower body.
And John saw that although Mary said no with her mouth, she did not intend to stop him, so John was even more convinced that he should be able to do Mary and fulfill his dream. So he became bolder, and his hands wandered to the inside of Mary's thighs.
"Sister, you have needs, and I have always had fantasies about you. Please, can you?"
"You have fantasies about me? How can that be, my figure is not good, my butt is big, how can..."
"Sister, if you don't say it, you won't know," John said. "Although your butt is big, I am especially fascinated by your big butt. I often fantasize about you, and I have sniffed your panties and bras in your bathroom several times, masturbating and masturbating. I thought that if I could have sex with you one day, it would be extremely comfortable."
Mary was even more surprised in her heart, never expecting that her sister's husband was so fascinated by her, and never expecting that she could be so seductive. Coupled with the fact that John's little brother was indeed bigger than her husband's, and she did have needs, Mary's defenses gradually collapsed with John's movements, and her body gradually became uncontrollable. But reason and modesty still told her not to, "What are you talking about! You're crazy! Stop it, don't touch me, I'm your wife's sister, we can't!..... Ah..... "Mary groaned and said.
"Sister, in fact, you can't help it, you really want to make love, I let go of the worldly shackles, we are happy, and we don't hurt others, it's just between us, who knows if we don't say it?"
"Don't be silly, we are in-laws, this is incest, we can't......"
"Let me tell you, I haven't had sex with Alice for a while, I can't even get aroused to do her, but every time I see you, I have the urge to make love to you, I have to masturbate immediately. I know this is very abnormal, but I really like you, just treat me as your husband."
John began to take off Mary's clothes and first licked her toes, ankles, calves, abdomen, and then sucked her breasts. Both nipples became erect. Mary kept shouting no, but she was powerless to struggle. John ignored her and slowly licked Mary's most important place. He spread Mary's legs apart, and her whole hairless beautiful pussy appeared. There was moisture oozing from the slit, and the two large labia began to wet and shine. John stroked the slit with his fingers.
"Oh... no... don't......" Mary began to get excited, but she continued to shout no! Her mouth said no, but her pussy was so lustful that it oozed moisture.
John spread her two large labia apart with his fingers and stuck out his tongue to lick her pussy and small labia, finally sucking on her clitoris.
"Ah... ah......" Mary shuddered: "Um... don't... ah... no... can't... ah..." She pushed John's head away with her hands.
Mary moaned softly, "Ah... no... don't... I can't... please... ah... no..." She tried to push John's head away or pull his hair. John found her so aroused and sexy. Goosebumps covered his whole body as her juices flowed from her pussy down to her asshole and then to the bedsheet. Mary said breathlessly later, "John... don't... lick... anymore... I... beg... you... don't... suck... anymore... oh..."
John thought: How silly! How could he listen to Mary? Her actions and words only aroused John to the extreme. Physiologically Mary was already ready.
John continued to lick Mary's pussy and suck her clit. He also thrust his tongue in and out of her vagina, using his killer move of licking and thrusting his tongue in and out of her asshole! Gradually John felt Mary having an orgasm.
