
Though maybe that shouldn’t have been such a surprise with this particular underground idol unit.
Iroha Tanaka is an idol singer, at least for the time being. This week, though, she announced that she’ll be leaving Hiroshima-based idol unit Planck Stars in the fall, and a major reason is that she thinks the group’s otaku fans are “nasty.”
▼ “All of you, address me as ‘Tanaka-sama,’” commands Tanaka in this tweet from last spring.
https://twitter.com/plasta_iroha/status/1381596546542657536Becoming an idol pretty much guarantees that you’ll come into some degree of contact with obsessive fans, since it’s really the otaku interest and perceived audience/performer interaction that set the idol industry apart from the rest of the Japanese music sector. Planck Stars’ fanbase, though, is a unique brand of unusual, as the underground/indie idol group’s performances are a mix of idol dance routines and punk-style mosh pits, with plenty of crowd-surfing thrown in for good measure.
#今日のUFOUFO pic.twitter.com/TGYYZyLPlR
— ぷらんくすたーず | official (@planckstars) May 30, 2021
While some idol groups play up a sexy image with revealing costumes, it looks like at Planck Stars’ concerts, it’s the fans who’re likely to show off exposed flesh, as seen in this shirtless scene from a show in May.
プランクスターズのライブ映像です pic.twitter.com/gMjiFIqG6w
— ぷらんくすたーず | official (@planckstars) May 16, 2021
This doesn’t appear to be a case of rowdy fans ironically going against the grain of Planck Stars’ wholesome, demure sensibilities, either. In this video, the lyrics start off with an assortment of slang terms for breasts, vagina, and penis.
【この世の終わり可変】
— ぷらんくすたーず | official (@planckstars) May 22, 2021
おっ〇い ま〇こ ま〇こ ち〇こ
おま〇こしょっぱっぴー
なめたらほっけっきょー
ズッコンバッコン ×4
ズッコンバッコン ち〇毛 ま〇毛
ゆかり飲んでなくない wow×2
いっきっきのきー いっきっきのきー
おま〇こ ち〇こ おち〇こ ま〇こ
おっ〇い ち〇こ ち〇こ ま〇こ pic.twitter.com/NIHR7a4yzn
But while Planck Stars very much leans into this edgy image, it’s all become a bit too much for Tanaka. In June, the group announced that she would be going on hiatus, citing her statement that “The style of our concerts is filthy and nasty, and it’s psychologically impossible [for me to do them anymore]),” and “I’ve come to feel the otaku are nasty to the same extent, and have reached my mental limit.”
▼ “Filthy” can apply in a literal sense to Planck Stars’s concerts. Here, the unit’s official account warmheartedly thanks fans for coming to their show while sharing a photo of the venue’s floor following the performance, now caked with fish guts, watermelon rinds, shampoo, and skin lotion.
【御礼】
— ぷらんくすたーず | official (@planckstars) May 30, 2021
PLASTA JAMありがとうございました。
ライブ後の床は生魚の死骸、スイカの破片、ビリビリに破れた口上シート、ローション、絵の具とシャンプーがまみれた床になってました。 pic.twitter.com/PuaiTCCqR9
Planck Stars and Tanaka have now announced that her hiatus will be continuing until the end of August, and that after skipping her two previously planned summer appearances, she’ll officially be retiring from the group in September. “The time I spent with everyone in Planck Stars was fun,” Tanaka tweeted, “and I’m sorry that things turned out this way. I can’t really put my feelings into words very well, but thank you.” Her final time to take the stage is scheduled for September 19, and she adds “For those of you who have the time to stop by, I’d like the chance to say goodbye.”
https://twitter.com/plasta_iroha/status/1411972345833484291Given how Planck Stars plays up its wild and crazy side, it’s sort of hard to imagine Tanaka didn’t expect any degree of rowdiness from the fans, but perhaps it was all several degrees more than she’d envisioned. Either way, it’s clear that she’s decided that this isn’t the life for her, and thankfully she’s getting to move on to something else.
Source: Sponichi Annex via Yahoo! Japan News via Hachima Kiko
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!

Japanese concertgoer sues idol group because dancing otaku ruined the show for him
Japanese idol singer announces hatred of otaku faces, further solidifies masochistic fanbase
Japanese idol group’s CD-purchase rewards include overnight hot spring stay with favorite singer
Japanese idol group asks fans to be respectful towards pre-teen singer for heartwarming reason
Japanese idol group bans all gifts from fans to teen singers to help protect their values
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
The fish in rural Fukui that rivals Japan’s most auspicious sea bream
Japanese restaurant chain serves Dragon Ball donuts and Senzu Beans this spring
Eevee returns to Japan’s famous Tokyo Banana, bundled with a cute tote bag
Forget dog-earing and bookmarks that fall, make your own easy origami bookmark instead!
Maid street in Akihabara gets a new vending machine that’s sweeter than usual
Pandas as pets?!? That’s impawsible!!!
Ramen vending machine in Tokyo satisfies noodle and gyoza cravings at any time of day or night
7-Eleven now has make-it-yourself smoothies in Japan, and they’re amazing
Highest Starbucks in Japan set to open this spring in the Tokyo sky
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Tokyo Skytree turns pink for the cherry blossom season
Yakuzen ramen restaurant in Tokyo is very different to a yakuza ramen restaurant
Shibuya Station’s Hachiko Gate and Yamanote Line stairway locations change next month
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Starbucks Japan adds new sakura Frappuccino and cherry blossom drinks to the menu
Japan Extreme Budget Travel! A trip from Tokyo to Izumo for just 30,000 yen [Part 1]
Japan’s new “Cunte” contact lenses aren’t pronounced like you’re probably thinking they are
Japan’s newest Shinkansen has no seats…or passengers [Video]
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
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]
Is China’s don’t-go-to-Japan warning affecting the lines at a popular Tokyo gyukatsu restaurant?
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
Japanese idol concert goes ahead during heavy rain, creates crazy scenes for otaku near Mt Fuji
Japanese idol singer responds to fan who gushes over how much he loves her thighs
Japanese company allows workers to take vacation to grieve if favorite idol singer gets married
Japanese idol singer holds memorial concert for 55-year-old fan who died alone and had no funeral
AKB48, Japan’s biggest idol singer group, apologizes for selling “Date Tickets”
How to rob an idol singer otaku: Look up the birthday of his favorite idol
Elitism divides otaku culture as the popularity of Japanese pop idols expands
Idol singer mega-group AKB48 cancels annual General Election following string of scandals
Whack-an-otaku event held by idol singer unit in Tokyo【Video】
Is the AKB48-style idol singer promotion system limiting Japanese music’s global appeal?
Idol singer forgets to shut off streaming camera, giggles over how much she makes per video【Vid】
Beautiful idol singer leaves show business, opens delicious ramen restaurant in Tokyo