Although beautiful, the housewife Natori Keiko is ordinary and longs for ordinary happiness, and her sister Aihara Shiho, who takes Keiko's misfortune as her greatest pleasure, weaves an intricate struggle.

Keiko Natori, a housewife who has been married for a year, and her husband Shinichi, an elite bank employee, live a happy married life that everyone envies.A serious and gentle husband, a good friend who consults me on everything, a father and mother who always surround me with affection, and most importantly - sister “, be happy.The important sister Shiho wants her sister to be happy more than anyone else.With the irreplaceable support of her family and friends, Keiko's life is going smoothly...as it should...

It was obviously the first wedding anniversary, but Shinichi didn't seem to care. While watching him go to work, he said, "Is it possible that the anniversary was forgotten...?" Keiko felt uneasy.Although her friend Yuka said that she was facing a divorce crisis in the first year of marriage, could it be Shinichi?Keiko, who never doubted others, even though she was shaken, still baked her signature apple pie and waited for her husband to come back...

That night, when Shinichi fell asleep, he received a message on his cell phone... It said ”I was very happy yesterday! The other party turned out to be my good friend Yuka...! Betrayal of a trusted friend!? However, that was just the prelude to the heroic battle that was about to begin!!

My happiness is to see your unfortunate appearance...The battle full of jealousy and desire begins!!

Natori Keiko, a housewife who lives a happily married life, begins to suspect that he and her friend Yuka are having an affair because she saw her husband Shinichi's cell phone.However, in fact, Shinichi's affair partner is not Yuka...The person who has a tryst with Shinichi every night is Shiho, Keiko's sister who has complete trust in her and will always be by my side...

“My happiness is to see my sister in misfortune”——Shiho has been disgusted with top student Keiko since he was a child.She wanted to break her sister's perfect smile... because of this, she took away the most important things from Keiko.However, only Shinichi is serious... Despite this, he acquiesced in marrying Keiko in order to knock Keiko down from the peak of happiness...

Keiko, who had no idea about this and completely believed in her sister, "I always have Shiho's help", believed Shiho's fabrication of Shinichi and Yuka's affair as true, and questioned the innocent Yuka... Then as Shiho expected, Keiko lost herThe most important friend——

In order to see the hurt look of the sister I hate the most... I fell from the peak of happiness! The poisonous fangs of the sister who went out of her way attacked Keiko!!

Keiko begins to suspect that her husband Shinichi is having an affair, but she never expects that the affair partner is her sister Shiho. When questioning her friend Yuka, the two quarrel and break up.Keiko was heartbroken because she lost an important friend, and next to her, Shiho, who had stolen Shinichi, smiled secretly...“Sister, you are always more unfortunate than me.”

Wanting to see her sister's unfortunate face again... When Shiho's twisted feelings intensified, Keiko's unexpected luck came to her.Pregnant with Shinichi's child.Unable to restrain her joy, Keiko was the first to report to Shiho.“Actually...I have a child.” Keiko put her hand on her stomach and chewed the happiness.That figure left Shiho speechless...I planned to push my sister from the peak of happiness to the bottom, but I didn't expect that I would also be pushed to the bottom...Anxious Shiho called Shinichi to the hotel and wanted to confirm his love for him, but it was over, right... Shinichi, who wanted to change his mood because of having a child, told me to break up...

Now is the happiest time.Keiko was finally satisfied... but it was only temporary. The evil hand of her sister who wanted to destroy her sister's happiness caused a tragedy...!!

Keiko, who was extremely happy after learning that she was pregnant, went to the department store with her sister Shiho, but unfortunately she fell down the stairs.

“Xinyi, I'm sorry, baby...”.Keiko was sent to the hospital and told Shinichi who arrived that she had had a miscarriage...Shinichi, who held back his tears, said that Keiko is fine, it's all my fault... Shiho couldn't stop crying.Keiko, who felt heartbroken by her sister's tears, comforted Shiho and said "It's no one's fault... don't cry anymore".——Yes, it's not anyone's fault. It was an accident, not my fault... The tears disappeared in Shiho's eyes as he walked out of the ward...“ Sister, thank you for making me miserable without permission.”

After being discharged from the hospital, Jingzi behaved cheerfully, and Yuxiang came to her after a quarrel and breakup.After learning the situation from Xinyi, he was restless.“Keiko, it’s okay to cry”… In front of her friends who accompanied her in grief, Keiko finally burst into tears….To Keiko like this, Yuka clearly explained that I definitely did not cheat on Shinichi, but it was something I was a little concerned about.

Keiko’s doubtful eyes finally fell on her younger sister Shiho!? Under such circumstances, Shiho changed his attitude and started to go berserk...!!

“Sister, I... and Xinyi are in love.”

Keiko, who didn't know anything, was shocked by her younger sister Shiho's confession.“Shiho, are you lying?”.Keiko was suddenly pushed to hell.Shiho looked at his tears, smiled proudly, and shouted in his heart...I want to see that face...be more desperate...cry harder...become more unfortunate!!

“Jingzi, no, listen to me.”Xinyi tried his best to argue, but Keiko couldn't hear it...The frustrated Jingzi returned to his hometown, quietly immersed in sadness alone.No matter how many times Xinyi came, Jingzi would drive him away without even meeting him.No forgiveness at all.Even so, she did not have the consciousness to accept divorce, nor did she have the courage to file for divorce.I can't do anything... To Keiko's good friend Yuka, Shinichi wants to face Keiko seriously.“Can't be silent, can't be patient, must vent everything in my heart.” Pushed by Yuxiang's words, Keiko decided to face Shinichi in order to seize happiness again.Keiko made up her mind, but was attacked by Shiho's fangs again!

At home, Keiko's parents were present, and her sister Shiho (Rina Asakawa) suddenly said something surprising: I have a baby in my belly, and it's Shinichi's child.“... Keiko (Yoshitani Ayako) was so shocked that she couldn't speak. Her father Tsuyoshi (Jimbo Goshi) beat Shinichi (Seto Toshiki) trembling with anger.

”How dare you do this to my daughter...“.Her mother Noriko (Riko Yamashita) was in tears, and Shiho stepped forward to stop her father... Seeing the important family members falling apart, Keiko finally made a decision and said to Shinichi: ”I want to divorce you.%......

A month later, Keiko and Shinichi separated, adjusted their mood, moved into a small apartment and began to live alone.Although I don’t know when I can forgive Shinichi, but thinking about it calmly, maybe I was wrong for not noticing Shiho’s feelings for Shinichi.While the kind-hearted Keiko was thinking about these things, a new encounter came——

Keiko plans to start again.However, at this moment, Shiho stood in front of Keiko again, and Keiko finally knew Shiho's true face!The sister who always supported him with a cute smile turned out to be a false smile just to make him miserable... The sister who knew her true face finally started to fight back!!

After the divorce, Keiko (Yoshitani Ayako) changed her appearance and started a new life in a small apartment. At the same time, the wedding banquet of her sister Shiho (Asakawa Rina) and her ex-husband Shinichi (Seto Toshiki) is about to be held.Neither Keiko nor her parents attended the wedding. Shiho was pregnant with the child, looking happy.She smiled triumphantly, as if she had won: “Sister must be in her moldy room now, eating shabby food.”At this moment, the lights at the venue suddenly went out, and the emcee's voice sounded: “Now, let us welcome the surprise guests.”

Shiho and Nobu, who had no idea, looked at each other in confusion.In front of their eyes, the entrance door slowly opened. Standing there was Jingzi wearing a bright red dress and exquisite makeup!

“elder sister!” Shiho was stunned, Shinichi also held his breath, and the guests were in an uproar.Under the gaze of everyone, Jingzi smiled calmly and said: “You two, I wish you a happy wedding.”The guest seats burst into warm applause and cheers...

However, Keiko’s purpose was not to congratulate!Finally, it's time to fight back... Keiko is about to pull Shiho down from the peak of happiness!

It has been a year since Ayako (Yoshitani Ayako) ruined the wedding... The marriage life of younger sisters Shiho (Asakawa Rina) and Shinichi (Seto Toshiki) has cracked early.After giving birth to a child, Shiho was troubled by the child's crying almost every night. He became bored with housework and childcare, and his home became a mess.Because she has a child, she can't go to the beauty salon. Nobuichi sighed and said: "If it were Cai Zi, she would do it perfectly."“Shiho can't feel happiness at all...

An angry Shiho becomes increasingly resentful of Ayako - it's all her sister's fault.

On the other hand, although Ayako was proposed to by her new boyfriend Kataoka Haruki (Miura Takahiro), she was not happy.If she becomes happy, Shiho will definitely come back to destroy her... Sure enough, Shiho, pushing a stroller, appears in front of Ayako pretending to be by chance...!

Although she was anxious about the reunion with Shiho, when she saw the child in the stroller, Caiko couldn't help but smile and said: ” looks exactly like Shiho when she was a child.%Although a lot has happened, it’s time to move on... I must also become happy - Ayako made up her mind and accepted Haruki’s proposal... However, at this time, Shiho came up with a plan to destroy Ayako.Way to happiness!The happiness that I finally captured will be destroyed again because of my sister's trap...!

I did not molest her, she is your sister...".

Keiko (Yoshitani Ayako)'s fiancé Haruki (Miura Takahiro) was arrested on suspicion of sexual harassment in the train.It was her sister Shiho (Rina Asakawa) who made the accusation... Of course, this was fabricated to destroy Keiko's happiness.

Keiko rushed to the station after receiving the notice, and was asked by Shiho to apologize:“ If you apologize seriously here now, I won't call the police.”.“As long as he apologizes... he will be let go, right?”.Although Keiko was trembling from the unprecedented humiliation, in order to save Haruki, she still knelt down in front of Shiho and apologized - “I'm sorry”.

“It's all my fault, it's my sister who...”.Keiko felt heartbroken about being implicated in Chunxi, and broke up with Chunxi who was released.“As for the marriage, just pretend it never happened”.So Chunxi accepted the breakup frankly: "I don't have the confidence to get along well with you sisters anymore".Shiho smiled mockingly after hearing this, and then in order to further attack the two, he spread a video of Keiko kneeling down to apologize.Therefore, both Keiko and Haruki were fired from the company, and their cohabitation and engagement were cancelled... Keiko, who seemed to have suffered failure, has not given up “happiness” yet!You have to seize your own happiness... My sister's heroic revenge plan has begun!!

“I'm waiting for you, Shiho.Three years after she broke off her engagement with Haruki (Takahiro Miura), Keiko (Ayako Yoshitani), who works in a restaurant in the suburbs, has her sister Shiho (Rina Asakawa) appear in front of her.Shiho, who became the wife of the president of the large conglomerate Muto Group and lived a celebrity life, heard that Keiko was working in a restaurant run by her husband and came to disturb her.Shiho looked down upon Keiko and said: "You are in your 30s and still doing odd jobs? How pitiful."” Jingzi said decisively: “Don't come to this store again.”However, Jingzi has been looking forward to this day.Keiko attempts to take revenge on Shiho with the help of her friend Yuka (played by Murase Sae)...

Shiho, who was unaware of this, asked her husband to promote Keiko to a full-time employee in order to push Keiko down from the peak of happiness again.The menu designed by Keiko was well received, and the restaurant received many invitations for interviews from the media.“My sister looked very happy”——Shiho took advantage of the position of the boss's wife and broke into the restaurant after closing, and began to behave like no one else in front of Keiko...

Shiho's minions who are persistently pursuing...The fate Keiko is waiting for!? The sister who wants happiness VS the sister who wants to destroy happiness! The battle finally enters the last chapter!!