Aisai no Ura Aka

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Familiarise yourself with the law in Japan first, and then write.

Legal rights and status. De facto marriage (cohabitation) is much more important. In Japanese law, couples who have been living together for a long time and run a joint household (Zenritsukon) are legally protected almost in the same way as official spouses. Cohabitation rights: A couple has the right to the division of property in case of expenditure, the right to receive a survivor's pension and payment for industrial injuries. Engagement rights: Engagement is only an intention. It does not provide any social guarantees or rights to the partner's property.

Protection during parting (Compensation). The statuses are approximately equal, but cohabitation is easier to prove. If one of the partners suddenly breaks off the relationship without a valid reason (for example, because of infidelity), the other party is entitled to monetary compensation for moral damage (Isyaro). When cohabiting, it is easy to prove the fact of a relationship: a common residence permit in one house (Juminhyo), a general budget. When engaged, it is more difficult to prove the fact of a contract if there was no lavish ceremony or an expensive ring.

If the engagement was concluded before or at the very beginning of 8 years of cohabitation, and the groom has been inactive all this time, the concept of actual termination of the engagement by mutual consent or due to loss of trust comes into force. The limitation period: As mentioned earlier, the limitation period for engagement disputes in Japan is 3 years. If the groom knew (or should have known) that the woman had left him and lived with another, but had not taken any legal action for 3 years, he lost the right to claim compensation (Isyar) through the court.

For 8 years of living together, the common-law husband has acquired almost the same rights as the official spouse: Protection from the groom: A common-law husband cannot be brought to justice. The court recognises him as an absolutely conscientious party. Moreover, his 8-year-old union is protected by law.

The presence of photos from the wedding ceremony in a civil marriage (which lasts 8 years) radically changes the status of this relationship. In Japan, this turns ordinary cohabitation into an officially recognised de facto marriage (Zenritsukon / 事実婚) with all the ensuing legal consequences. For the Japanese court and immigration service, wedding photos are the strongest material evidence that the couple did not just live together for the sake of economy, but had a firm intention to be a family and openly declared it to society.

Here's how the presence of wedding photos affects the participants of the situation:1. Full cancellation of the old engagement If a woman held a wedding ceremony with a common-law husband, then from that very day on her previous engagement with the first man is considered finally and irrevocably broken through her fault. Counting the limitation period: It is from the date of this wedding (or from the moment when the first groom found out about it) that the 3-year limitation period begins to tick [the Civil Code of Japan]. If this wedding took place at the beginning or middle of the 8-year term, and more than 3 years have passed since then, the old groom has no right to claim compensation (Isyaryo) through the court. The time for the lawsuit is up.2. Absolute protection of the common-law husband Photos prove that the common-law husband sincerely considered himself a legal spouse (albeit without a stamp). If the old groom somehow decides to sue him, these photos will become the main shield. They confirm that the man acted in good faith, did not "take away" someone else's bride secretly, but openly created a family. Any claims against it will be rejected.
Oh, but i AM aware of the japanese law. In fact, it ressemble those of my country in regards of civil marriage. Adultery, on the other hand...not so much.

But, you see...if she proves that the entire marriage is a sham, and there's no legal household to sustain( that with the help of a good enough lawyer) it's not difficult for the jurisprudence to favor Rika.

Likewise, if Shiho's not Sousuke's biological daughter, and the marriage is a fake, Rika can walk away with another proof that the marriage didn't happen, and at best was performatic. Didn't you assume that Sousuke was drugged while doing Momonga videos? Imagine false proving he had some addiction and put it into table in her favor.

But alas, i'll go with the simple response of suspension of disbelief, because much of what happened in this story does not care about actual law proceedings, and at times not even logic.
 
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I'm not entirely sure how Japanese marriage law works, nor if the author had the laws in mind when making the manga. All I see is the manga is based on not just adultery, but an entire underground social network of illegal activity in which the protagonist and his allies are fighting against all odds (corruption).

So for the theory of the marriage being entirely forged. isn't entirely off the table for manipulation. Rika and Iwabachi aren't exactly known for being law abiding citizens.

But this does bring in mind that momonga is about a channel about cheating spouses. Sousuke on his journey, has had close calls of cheating himself. Within Rika's controlled environment, chapter 7 is the earliest we see this happening. The imagery of his mind being broken and him threatening to cheat/steal the "first wife" out of many that were to come. Of course, video recordings of Sousuke being the bull, the one who steals wives, would get high ratings (money). Making Iwabachi's accusations of Sousuke "Stealing" Rika being true.

Only reason he didn't cheat was because of an outside force that wasn't under Rika's control, Akiba. She has always gotten in the way of Rika's plan of controlled adultery by making Sousuke self-reliant/mentality strong. Narcisist always view people not in line as insignificant, hindrances, and "bugs". Can't forget that Rika is doing all this for the sake of excitement. What is more exciting than preparing her "husband" on a journey for "true love" (Chasing her).
 
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Oh, but i AM aware of the japanese law. In fact, it ressemble those of my country in regards of civil marriage. Adultery, on the other hand...not so much.

But, you see...if she proves that the entire marriage is a sham, and there's no legal household to sustain( that with the help of a good enough lawyer) it's not difficult for the jurisprudence to favor Rika.

Likewise, if Shiho's not Sousuke's biological daughter, and the marriage is a fake, Rika can walk away with another proof that the marriage didn't happen, and at best was performatic. Didn't you assume that Sousuke was drugged while doing Momonga videos? Imagine false proving he had some addiction and put it into table in her favor.

But alas, i'll go with the simple response of suspension of disbelief, because much of what happened in this story does not care about actual law proceedings, and at times not even logic.
What are you talking about anyway? Has she forged her documents and marriage documents and will prove in court that they are fake? She will be jailed for forgery of documents.
 
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I feel like in our interesting theories, we’ve started to lose sight of what this work is actually about.

It’s definitely not about the law or the complexities of the divorce process.

In my opinion, the author has given us enough material to draw the main conclusion:

The affair itself, as well as the Main Character’s marital status, are not fundamentally important, even if Rika Miyase had always been faithful to her husband.

After even a partial reveal of the wife’s “identity,” we can be sure that her moral character was made this dark for a reason. It was done intentionally, in order to shift the central connecting element of the story—the affair plot—toward a story along the lines of: “I lived with a serial killer for ten years, and then THIS is how I found out!”

We have already seen so many unlawful acts, disgusting and brutal crimes, that seriously discussing one form or another of the heroine’s promiscuity simply doesn’t make sense.

I am more than certain that the author’s explanation for why Sousuke was unable to leave this relationship (according to Rika’s account), as well as the reason behind the affair, will be presented in some elaborate form along the lines of: Rika Miyase is a psychopathic person incapable of controlling herself, and the author will either borrow or invent psychiatric disorders and “realistic” motives to explain her twisted behavior.
 
Member
Joined
Aug 21, 2026
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I feel like in our interesting theories, we’ve started to lose sight of what this work is actually about.

It’s definitely not about the law or the complexities of the divorce process.

In my opinion, the author has given us enough material to draw the main conclusion:

The affair itself, as well as the Main Character’s marital status, are not fundamentally important, even if Rika Miyase had always been faithful to her husband.

After even a partial reveal of the wife’s “identity,” we can be sure that her moral character was made this dark for a reason. It was done intentionally, in order to shift the central connecting element of the story—the affair plot—toward a story along the lines of: “I lived with a serial killer for ten years, and then THIS is how I found out!”

We have already seen so many unlawful acts, disgusting and brutal crimes, that seriously discussing one form or another of the heroine’s promiscuity simply doesn’t make sense.

I am more than certain that the author’s explanation for why Sousuke was unable to leave this relationship (according to Rika’s account), as well as the reason behind the affair, will be presented in some elaborate form along the lines of: Rika Miyase is a psychopathic person incapable of controlling herself, and the author will either borrow or invent psychiatric disorders and “realistic” motives to explain her twisted behavior.
For sure. As for what ever the author may reveal to us as Rika's Character motivations we can only speculate how he will go about it.

I also like to add that Sousuke's earliest memories of "Rika" (High School) is the one he thought he married. The "Rika" we seen after high school, from the other's PoV' of the past, has always been seen as this type of manipulative character with a hidden agenda.

Whether the author is going to set up Rika as been born a Pychopathic Narcisist (Been killing bugs/animals at a young age. Trope: Born Evil) or she was an evil that was created from her tragic enviornment, in which case she will lose the battle but will recieve forgiveness (as well as justice) or she is far too gone and gets destroyed in all manners as a villian.

It can go beyond our expecations. Good or Bad.
 
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What are you talking about anyway? Has she forged her documents and marriage documents and will prove in court that they are fake? She will be jailed for forgery of documents.
That's assuming Sousuke will take her to Justice, or she'll get caught. Since he hasn't moved an inch towards doing this to her, and her narcisist persona doesn't even believe she'll get caught, this scenario is not off the hook, but rather unlikely.
 
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Messages
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Familiarise yourself with the law in Japan first, and then write.

Legal rights and status. De facto marriage (cohabitation) is much more important. In Japanese law, couples who have been living together for a long time and run a joint household (Zenritsukon) are legally protected almost in the same way as official spouses. Cohabitation rights: A couple has the right to the division of property in case of expenditure, the right to receive a survivor's pension and payment for industrial injuries. Engagement rights: Engagement is only an intention. It does not provide any social guarantees or rights to the partner's property.

Protection during parting (Compensation). The statuses are approximately equal, but cohabitation is easier to prove. If one of the partners suddenly breaks off the relationship without a valid reason (for example, because of infidelity), the other party is entitled to monetary compensation for moral damage (Isyaro). When cohabiting, it is easy to prove the fact of a relationship: a common residence permit in one house (Juminhyo), a general budget. When engaged, it is more difficult to prove the fact of a contract if there was no lavish ceremony or an expensive ring.

If the engagement was concluded before or at the very beginning of 8 years of cohabitation, and the groom has been inactive all this time, the concept of actual termination of the engagement by mutual consent or due to loss of trust comes into force. The limitation period: As mentioned earlier, the limitation period for engagement disputes in Japan is 3 years. If the groom knew (or should have known) that the woman had left him and lived with another, but had not taken any legal action for 3 years, he lost the right to claim compensation (Isyar) through the court.

For 8 years of living together, the common-law husband has acquired almost the same rights as the official spouse: Protection from the groom: A common-law husband cannot be brought to justice. The court recognises him as an absolutely conscientious party. Moreover, his 8-year-old union is protected by law.

The presence of photos from the wedding ceremony in a civil marriage (which lasts 8 years) radically changes the status of this relationship. In Japan, this turns ordinary cohabitation into an officially recognised de facto marriage (Zenritsukon / 事実婚) with all the ensuing legal consequences. For the Japanese court and immigration service, wedding photos are the strongest material evidence that the couple did not just live together for the sake of economy, but had a firm intention to be a family and openly declared it to society.

Here's how the presence of wedding photos affects the participants of the situation:1. Full cancellation of the old engagement If a woman held a wedding ceremony with a common-law husband, then from that very day on her previous engagement with the first man is considered finally and irrevocably broken through her fault. Counting the limitation period: It is from the date of this wedding (or from the moment when the first groom found out about it) that the 3-year limitation period begins to tick [the Civil Code of Japan]. If this wedding took place at the beginning or middle of the 8-year term, and more than 3 years have passed since then, the old groom has no right to claim compensation (Isyaryo) through the court. The time for the lawsuit is up.2. Absolute protection of the common-law husband Photos prove that the common-law husband sincerely considered himself a legal spouse (albeit without a stamp). If the old groom somehow decides to sue him, these photos will become the main shield. They confirm that the man acted in good faith, did not "take away" someone else's bride secretly, but openly created a family. Any claims against it will be rejected.
Thanks for the useful information.

It leads me to think that Iwabushi really hates Sousuke for taking Rika away from him (broke the engagement) so he is making Rika pay by working for him while plotting his revenge against Sousuke.

And the unborn child is likely Sousuke's because he was drugged and filmed with Rika but the audio was dubbed over so he wouldn't recognize himself as well as the drug's side effects caused him to lose his memory of the event. That's why Rika's confident she'll not get divorced.
 
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Chapter 95 dropped. I'll post the summary as soon as i can, though i'm having some issues on my side. The short straw is:
  • Sousuke gets hard upon seeing Akiba going through all that;
  • When prompted by Maruppi, he goes limp, with his worst fears coming into action( he's in love with another woman, who's not his wife, and currently undergoing adultery himself);
  • Rika's lunatic crazy plan was for Sousuke to only be able to have sex with her, and her only;
  • Misato wonders what's wrong with her, having cheated with another man, but showing such an absurd obsession with Sousuke;
  • Chapter ends with Akiba ready to be raped, while her conciousness is faliing from the drug.
 
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Chapter 95 dropped. I'll post the summary as soon as i can, though i'm having some issues on my side. The short straw is:
  • Sousuke gets hard upon seeing Akiba going through all that;
  • When prompted by Maruppi, he goes limp, with his worst fears coming into action( he's in love with another woman, who's not his wife, and currently undergoing adultery himself);
  • Rika's lunatic crazy plan was for Sousuke to only be able to have sex with her, and her only;
  • Misato wonders what's wrong with her, having cheated with another man, but showing such an absurd obsession with Sousuke;
  • Chapter ends with Akiba ready to be raped, while her conciousness is faliing from the drug.
I can’t even believe that the dumbest and funniest expectations actually came true.


The villain’s motivation is based on something completely irrational and absolutely nonsensical.


And it’s on this shaky foundation that the author builds a story full of criminal acts. I just can’t believe MITA went down the same path as Scandal in Neon Tokyo, where the villain literally committed all those atrocities simply because he was bored. (Hello, Light Yagami.)


Because that’s exactly how you create a good antagonist, right?
 
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You will look at her expression on this chapter and deny it happening?
The expression on her face doesn't mean it was her plan. She's insanely happy that Soska doesn't have an erection on other women. And seeing this, she confirms her guesses. Soske talked about his erection in the first chapter, when he hadn't even seen a video from a secret account yet.
 

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