
Tokyo district says Detective Conan singer can once again use the name that everyone else already calls her.
On Thursday, presiding judge Tomoyuki Tobisawa handed down his verdict in a lawsuit heard in Tokyo district court. After considering the assertations made by both sides in the lawsuit, and carefully weighing them against codified law, Tobisawa came to the conclusion that yes, Rina Aiuchi is allowed to call herself Rina Aiuchi.
Ordinarily, that wouldn’t be the sort of thing you’d need official judiciary permission for. And no, this wasn’t a kanji kerfuffle, like the one that caused the Pokémon Center to issue an apology for calling Nicole Fujita Nicole Fujita. Instead, the lawsuit was necessary to untangle a legal dispute between Aiuchi and talent agency Giza Artist.
Though she never rose to quite the same heights as some of her more famous early 2000s J-pop contemporaries, Aiuchi carved out a respectable career as a high-energy vocalist, with her 2000 breakout single “Koi wa Thrill, Shock, Suspense” serving as an opening theme song for the Detective Conan anime TV series.
However, Aiuchi was born Rikako Kakiuchi. Rina Aiuchi is the stage name she took when she signed her debut contract in 1999 with Giza Artist, and that contract included a clause that the agency would retain exclusive rights to the Rina Aiuchi name in perpetuity, even after the end of their talent management contract for her.
Aiuchi and Giza’s working relationship ended in 2010, meaning that when she decided to return to singing in 2015, she had to do so under yet another stage name, Rika Kakiuchi, which she later changed once more to just R.
▼ Aiuchi performing a self-cover of “Ohh! Paradise Taste!!”, originally released in 2000
Recently, though, Aiuchi began using the Rina Aiuchi name in a professional capacity once again. In response, Giza Artist filed an injunction to block her use of the name, but that injunction has now been struck down in Tobisawa’s ruling. Tobisawa pointed to the section of Japan’s civil law code that states that “legal action contrary to public order and morality are invalid” and deemed that the rights to Aiuchi’s stage name being held indefinitely by the talent agency, even when the performer is no longer under contract or receiving compensation, were such a violation.
“I am very happy to be able to proudly perform as Rina Aiuchi,” the singer said following the verdict, so hopefully this will be her last renaming.
Source: Kyodo via Yahoo! Japan News via Otakomu, Asahi Shimbun Digital
Top image: Pakutaso (edited by SoraNews24)
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!
Follow Casey on Twitter, where he still remembers having to pay import prices to buy Rina Aiuchi’s “Navy Blue” in California.

10 times to avoid traveling in Japan in 2026
Ramen restaurant’s English menu prices are nearly double its Japanese ones, denies discriminating
We ate sushi made from Japan’s most expensive tuna ever【Taste test】
Our 52-year-old pole dancing reporter shares his tips for achieving your New Year’s exercise goal
Here’s what our bachelor writers ate over the New Year’s holiday in Japan
10 times to avoid traveling in Japan in 2026
Ramen restaurant’s English menu prices are nearly double its Japanese ones, denies discriminating
We ate sushi made from Japan’s most expensive tuna ever【Taste test】
Our 52-year-old pole dancing reporter shares his tips for achieving your New Year’s exercise goal
Here’s what our bachelor writers ate over the New Year’s holiday in Japan
Four Shinto shrines to pray for love at in Japan to start the New Year
This quiet forest cafe in Japan lets you read all day in the house of a famous author
Umamusume anime girl plushie recalled for having parts she absolutely should not have【Pics】
The five least stressful jobs, as ranked by Japanese working people
Reading books makes you aware we live in the Matrix, artist depicts
Japanese beef bowl chain Sukiya’s 2026 Smile Box lucky bag basically pays for itself
Hayao Miyazaki says Happy New Year to Studio Ghibli fans with new art for Year of the Horse
Starbucks Japan ready to get Year of the Horse started with adorable drinkware and plushies【Pics】
Top Japanese cosplayer Enako returns to Comiket after 6 years, creates mayhem with admirers
Cup Noodle tries an authentic Jiro-style ramen, but something’s not quite right
The best Starbucks Japan Frappuccinos we want to drink again in 2026
We revisited Sweets Paradise after a decade to see if Japan’s dessert buffet still delivers
That time Seiji called JASRAC to ask why he didn’t get paid royalties for his song being on TV
7-Eleven Japan starts new temporary luggage storage service in over 300 branches
Disillusionment at Tsukiji’s tourist-target prices led us to a great ramen restaurant in Tokyo
Starbucks teams up with 166-year-old Kyoto doll maker for Year of the Horse decorations【Photos】
Tokyo considering law requiring more trash cans following litter increase in heavily touristed area
Tokyo’s Tsukiji sushi neighborhood asks tour groups to stay away for the rest of the month
Tokyo event lets you travel back in time, for free, to celebrate 100 years since Showa era start
Japan may add Japanese language proficiency, lifestyle classes to permanent foreign resident requirements
Lacquerware supplier to emperor of Japan and Pokémon team up for new tableware
Starbucks Japan releases new zodiac chilled cup drink for 2026
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
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
Starbucks Japan reveals new sakura drinkware collection, inspired by evening cherry blossoms
Updated cherry blossom forecast shows extra-long sakura season for Japan this year
Human washing machine pods coming to Japanese hotels【Photos】
Four Shinto shrines to pray for love at in Japan to start the New Year
This quiet forest cafe in Japan lets you read all day in the house of a famous author
Umamusume anime girl plushie recalled for having parts she absolutely should not have【Pics】
The five least stressful jobs, as ranked by Japanese working people
Reading books makes you aware we live in the Matrix, artist depicts
The slogans for every Studio Ghibli movie, ranked by fans in Japan【Quiz】
We make French toast from castella cake, and it’s absolutely yums!【RocketKitchen】
Tokyo has a brand new Harry Potter shop with its own butterbeer bar – Let’s see what’s inside【Pics】
Godzilla-shaped ice cream on sale in Tokyo near the sight his most adorable rampage
10 great autumn Japan travel spots for fall colors and retro atmosphere【Survey】
7-Eleven Japan’s ramen-cooking robot whipped us up a bowl of noodles【Taste test】
Dragon Quest Burgers and Slime drinks are coming to McDonald’s Japan【Video】
Leave a Reply