
Cheating and adultery are one of the leading causes of divorces and break-ups. No one wants to be cheated on, and for those who do the cheating, the thrill of sneaking around and trying not to get caught is sure to spur some adulterers on. However, at what point is what you are doing considered cheating? For most people, sex is certainly cheating, and kissing someone other than your partner is crossing the line. But is having dinner with someone cheating? Is having lunch? Is spending significant time with someone cheating?
An Osaka judge has drawn a new line in the sand for what is considered adultery in Japan, with one woman suing not her husband but his “mistress”, despite the fact that there was no intercourse involved.
This past March, a startling judicial ruling came down in the Osaka district court. A wife, who was suspicious of her husband and his female colleague, went to trial seeking compensation from the “mistress”. The judge ruled that the female colleague was indeed a “mistress” despite the husband and the other woman never having sexual relations. The defendant was ordered to pay 440,000 yen (US$4,400) in restitution.
The uniqueness of this case was two-fold. First, it is quite rare for a wife to sue the mistress in Japan. Cases where a woman sues the other woman are few and far between. Secondly, cases where restitution was rewarded even though there was no sex involved are even less common.
While the husband worked for a pharmaceutical company in Osaka, he took frequent trips to Tokyo, where he met his female colleague. At first, the husband pursued a sexual relationship with the woman, but was rebuffed as she stated, “I don’t go after married men.” The two continued to meet during his trips to Tokyo. They classified their friendship as a “purely platonic relationship”, despite playing badminton together at the gym, and attending fireworks festivals together – something that many Japanese consider to be an especially romantic date.
The man’s wife quickly became suspicious, and she gathered enough evidence to take the mistress to court.
Although the court ruled that “there is not enough evidence to prove they were in a sexual relationship,” the adulterous couple “have to acknowledge that they went beyond a suitable friendship between a man and a woman,” and that it was an immoral relationship. Sakura Shimada, a lawyer from the Adire Law Firm was quoted saying, “When there isn’t a sexual relationship, it is very rare that you can claim compensation for damages. But, going forward, even when the situation is reversed, as in, a husband suing the wife’s paramour, if you cause damage to the ‘harmonious’ relationship of husband and wife, despite a non-sexual relationship, you can seek restitution.”
This ruling seems like a win, though plenty of times extramarital affairs, including those that don’t involve sex, can put a strain on the well-being of involved parties. The notary public seems to agree. “Even if there isn’t restitution for adultery, the two of them meeting, as they were, it’s just better if they avoided that kind of relationship. Moreover, with this ruling, the judge has correlated a ’cause and effect’ due to the cold manner which the wife felt from the relationship of the other two. In each other’s homes, we should endeavor to preserve the harmonious husband/wife relationship and better connect with our spouses.”
With this ruling in Osaka, many unhappy spouses may start looking into their own dysfunctional relationships and attempt to claim monetary settlements. For, in a country with paramours abound, you can be sure this will not be the last of these kinds of cases. One wonders though, what sort of damages does $4,400 cover?
Source: Niconico news
Images: Wiki Commons, men reloaded, RocketNews24



Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
Is Tokyo Station’s startlingly expensive wagyu bento boxed lunch worth its high price?[Taste test]
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
One Piece creator has hidden secret of anime treasure’s identity in chest at bottom of real-world ocean
Japan’s Human Washing Machine pods are now on sale for home use, and they’re not cheap
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
Is Tokyo Station’s startlingly expensive wagyu bento boxed lunch worth its high price?[Taste test]
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
One Piece creator has hidden secret of anime treasure’s identity in chest at bottom of real-world ocean
Japan’s Human Washing Machine pods are now on sale for home use, and they’re not cheap
Over four billion yen in lost cash was found in Tokyo last year, setting new record
Live-action One Piece’s Luffy teaches Sesame Street’s Elmo a Japanese word for friendship[Video]
The results are in! One Piece World Top 100 characters chosen in global poll
Do you remember giant robots? Full-scale Macross Valkyrie lands in Yokohama
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 2]
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japanese restaurant chain serves Dragon Ball donuts and Senzu Beans this spring
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 1]
Japan’s craziest burger chain takes menchi katsu to new extreme levels
Japanese drugstore sells onigiri at pre-stupid era prices, but how do they compare to 7-Eleven?
Viral Japanese cheesecake from Osaka has a lesser known rival called Aunt Wanda
Lawson adds doughnuts to its convenience store sweets range, but are they good enough to go viral?
Japan’s newest Shinkansen has no seats…or passengers [Video]
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Super-salty pizza sends six kids to the hospital in Japan, linguistics blamed
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
Foreign tourists in Japan will get free Shinkansen tickets to promote regional tourism
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Over four billion yen in lost cash was found in Tokyo last year, setting new record
Live-action One Piece’s Luffy teaches Sesame Street’s Elmo a Japanese word for friendship[Video]
The results are in! One Piece World Top 100 characters chosen in global poll
Do you remember giant robots? Full-scale Macross Valkyrie lands in Yokohama
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 2]
Adult Cream Pie coming to McDonald’s Japan
We followed Tokyo’s mystery walking map and ended up creating our own bar-hopping adventure
Tokyo Station staff share their top 10 favorite ekiben
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
The etiquette rules for visiting Shinto shrines in Japan
New Studio Ghibli exhibition brings anime movie magic to cities around Japan
New Whisper of the Heart antique shop collectibles now available in Donguri Kyowakoku shops
Starbucks Japan has a limited-edition candle…that hasn’t sold out yet
Lingerie-inspired bathing suits: The latest fashion coming this summer to Japan 【Photos】