Incest in Japan - Why does it seem acceptable?

You must have noticed in the current anime, novels and manga the amount of incestuous content present in the stories. Not only in erotic works, but also in children's and youth works you always find a passion or fetish for younger sisters.

Why does Japan allow anime of this type? How did this genre become popular? How does Japan really view incest? We will answer these questions through this article.


Although Japan is very traditional, it is quite open when it comes to sexuality, probably due to the absence of Christian religions in the country. Even in the Shinto religion the Japanese believe it was an incestuous relationship that gave rise to the country.

At the Feudal japan the lack of freedom caused the family to grow incestuously. Clans traditionally encouraged cousin relationships to perpetuate family dynasties. If a father was a widower, he would normally marry his daughter.

How does Japan view incest?

It was only with the westernization of Japan that the practice of incest was prohibited in the country. Genetic science researchers have found that incest causes several problems in human DNA.

A law against incest was created, but it was abolished in 1881, giving freedom to consensual incest. However, Japan's Civil Code does not allow marriage between family members. Socially, incest in Japan is strongly stigmatized.

After globalization, this type of relationship has become unusual. This topic is not usually addressed in Japan. The Japanese have no opinion on the matter, they consider it a shameful act and deny anything about it. As much as the Japanese say that incest does not exist, it happens hidden from Japan and the world.

Incest in Japan - why does it seem acceptable?

Some reports say that even mothers were having sex with their teenage children, the result of their husband's absence from home. Some mothers claim that it kept their children focused on schooling, not girls.

As much as some see sex as pleasure, having relationships with relatives can end up affecting you emotionally and changing the way we view our relatives.

Just do not take it literally, nor generalize, they are a case among millions. Such cases also happen in all countries. Worst of all is when these things happen without consent.

Why does incest seem acceptable in japan?

Why is incest in anime successful?

The first incest anime / hentai (involving sexual intercourse) was released in the 1980s under the name Cream Lemon, which focused on the brothers Hiroshi and Ami.

Currently there are several hentai involving incest of sisters, mothers and others. Even TV anime tend to push incest with works involving younger sisters like oreimo and Imouto sae Ireba Ii.

In anime, the younger sisters end up acting in an indecent manner. Do the younger sisters really behave like anime? In Japan, older brothers are much admired and sought after by their younger sisters.


Many older brothers struggle to care for their younger sisters. It would not be abnormal if it ends up resulting in a passion or love relationship.

The target audience for these lively incest works is usually the antisocial and lonely otaku. Probably some of them had a younger sister or had a fantasy with them, so they end up identifying themselves with these works. 

Another explanation for the popularity of these anime involving romance between siblings is because it is something unusual. Unusual and abnormal things attract attention and tend to be more exciting. Companies care little whether it is right or wrong, their interest is to generate income and profit.

Why does incest seem acceptable in japan?

List of the best incest anime

The best way to get to know and understand the culture of incest in Japan is through its animations. There are many incest anime, of brother in love, or that the protagonist's sister likes him. That kind of became a cliché.

Now let's see some anime where you have a little passion or love for brothers or other kinship. Let's see some incest anime or at least discuss the topic, since many anime create a non-bloody sibling relationship.

Ore no Imouto ga Konna ni Kawaii wake ga nai

One of the most famous of the genre, I recommend it to everyone, even for those who don't like incest, the theme is treated in a very light and comical way. I don't like the incest genre, but I like this anime, its animation, story and iconic characters.

The anime tells the story of 2 brothers who do not have a good relationship, but when they discover that their younger sister is an otaku addicted to eroge, the relationship of the 2 approaches. From the synopsis it may seem a little perverted, but the anime is great, fun, innocent and is among my favorites.

Incest in Japan - why does it seem acceptable?

Ero manga sensei - From the same creator of the previous one, in this comedy we find an author of light novels that has the illustrations made by his sister who is a hikikomori. Incredible how the author manages to approach adult themes innocently.

Other incest anime

KissXsis - This anime ecchi comedy show shows 2 sisters in love with their half brother, always doing provocative things with him.

Yosuga no Sora - a anime ecchi very heavy that shows several relationships, including sibling incest.


Marmalade Boy - A 76 episode anime that tells the romance of 2 half brothers.

Responsive Table: Roll the table sideways with your finger >>
Incest anime nameYear
Gosenzo-sama Banbanzai!1989
Kimi ga Aruji from Shitsuji ga Ore from2008
Kiss x Sis2008
Please Twins: The Summer Never Ends2004
Please Twins2003
Koi Kaze2004
Candy Boy2008
Candy Boy Episode 02007
Onii-chan Dakedo Ai Sae Areba Kankeinai yo ne!2012
Yosuga No Sora: In Solitude Where We Are Least Alone2010
Boku wa Imouto ni Koi wo Suru2005
Angel Sanctuary2000
Onii-chan at Koto Nanka Zenzen Suki Janain Dakara ne !!2011
Papa to Kiss in the Dark2005
Aki Sora: Yume no Naka2010
Aki Sora2009
Kuro to Kin no Akanai Kagi.2013

How should I view Japan because of incest?

Many people end up creating a prejudice from Japan because of incestuous anime. I consider this type of relationship to be wrong, but I don’t get involved in criticism and I think everyone does what they want. I hate it when people say, "Japan is disgusting because of incest." 

I think this is hypocrisy since several countries like France, Spain, Russia, Turkey, Luxembourg and other countries in Europe allow incest. Even American countries do not prohibit family relationships.

Especially because anime do not portray real life, they are just fictions, especially adult anime. So if you thought that Incest is a common or acceptable practice in Japan, you are totally wrong, it is like in any country, it happens in the dark.

Remember that just because the otaku like it doesn’t mean that the Japanese population approves. Possibly they hate it too. Even if you view incest as wrong because of religion, I don’t think there is any reason for discrimination. Sexual intercourse itself is disgusting (referring to the organs from which excrement comes out), no matter if the person is heterosexual, homosexual or incest.

If it is consensual, then you shouldn’t mind, they face the consequences. We cannot compel humanity to follow our concepts of morals. Of course, incest in anime is something totally different from real life, I personally do not see problems in watching anime with a focus on imouto (younger sisters). Is that you? How do you see it all? We appreciate your comments and also recommend: