
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.

Studio Ghibli unveils new Rollbahn notebook in honour of Howl’s Moving Castle
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Mister Donut wows matcha lovers in Japan with new Dora Matcha doughnuts
Universal Studios’ Sailor Moon theme park attraction is finally coming to America
Go, Super Alloy Kitty! Hello Kitty takes robot form and stars in original animated video
Studio Ghibli unveils new Rollbahn notebook in honour of Howl’s Moving Castle
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Mister Donut wows matcha lovers in Japan with new Dora Matcha doughnuts
Universal Studios’ Sailor Moon theme park attraction is finally coming to America
Go, Super Alloy Kitty! Hello Kitty takes robot form and stars in original animated video
Does this video about an abandoned dog leave you wiping your eyes or shaking your fist?
Starbucks Japan offers special sakura picnics at Reserve Roastery Tokyo beside Meguro River
Family Mart convenience stores add “See-Through Pudding?” to their summer lineup【Taste test】
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 2]
The joy of creating a wild Japanese ikebana flower arrangement for a country house【SoraHouse】
Train station platform ramen store closes its doors on half a century of history in Tokyo
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Cherry blossoms begin blooming in Japan with record-early starts for sakura season
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Tokyo government organizes food truck event to clear out delinquent/homeless teen gathering area
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
When will the cherry blossoms reach full bloom in Japan this year?[Forecast]
7-Eleven Japan’s giant fried chicken skewer would be too big to eat, so it’s really for cuddling
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
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
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
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
Does this video about an abandoned dog leave you wiping your eyes or shaking your fist?
Starbucks Japan offers special sakura picnics at Reserve Roastery Tokyo beside Meguro River
Family Mart convenience stores add “See-Through Pudding?” to their summer lineup【Taste test】
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 2]
The joy of creating a wild Japanese ikebana flower arrangement for a country house【SoraHouse】
Daiso has giant new branch in middle of Tokyo’s Shinjuku neighborhood (and another beneath it)
Get ready with Roland, the top-earning host in Japan【Video】
Getting a driver’s license in Japan the hard way: The first driving test a few more times
9 middle-aged Japanese men come to work in the clothes they’d like their partners to wear
The Japanese dog cafe that isn’t technically a dog cafe
We try a skincare device that’s supposed to improve the effectiveness of our beauty products
Stunning central Japan wisteria festival is like a purple fantasy straight out of a Ghibli movie
Does Tokyo’s King of Tonkatsu live up to its name? We find out 【Taste Test】