
”I wanted to damage their public images” he says of misguided quest for justice for another member of the group.
Being an idol singer in Japan means being judged as much for your appearance and projected personality as your singing and dancing talent, and so anyone stepping into the industry will definitely benefit from having not only a pretty face, but also thick skin. When people make disrespectful comments about a particular performer, often her only course of action is to stay strong and not let it affect her, but this week one disgruntled idol fan’s online hatred has landed him in trouble with the law.
Officers from the Tokyo Metropolitan Police Department have arrested Akihiro Kaku, a 50-year-old resident of the Nishi Ochiai neighborhood of the city’s Shinjuku Ward. The arrest comes as a result of comments Kaku posted on Twitter in May of 2019.
Among the comments Kaku made via the social network was one in relation to Marina Nishigata, a member of Nigata Prefecture-based idol unit NGT48. “Using stimulants has ruined her thought process and sense of humanity, so no matter what you say to her, it’s pointless,” Kaku tweeted, with the term he used for “stimulants,” kakuseizai, generally being used in Japanese to refer to methamphetamines. Other comments Kaku posted insinuated that fellow NGT48 members Minami Kato, Yuka Ogino, Ayaka Tano, and Eno Yamada also were users of illegal drugs.
▼ Marina Nishigata
新年一発目の握手会ありがとうございました!!!!すっごく楽しかったです😭✨おやすみメールが送れなかったので...今からSRします!よかったら遊びに来てください😭💓 pic.twitter.com/A2fgSmE3kI
— 西潟茉莉奈 (@marina_ngt48n) January 6, 2019
After becoming aware of the posts, NGT48’s management company requested assistance in determining the identity of the person who had sent the tweets, with the ensuing investigation leading to Kaku, who was arrested on July 21 on charges of libel. Kaku has admitted to the charges, saying “I suspected the five of them were involved in the assault of another NGT48 member, and I didn’t trust them. My aim was to damage their public images.”
While not mentioning her by name, Kaku is no doubt referring to Maho Yamaguchi, who was attacked by two men at the entrance to her home on December 8, 2018. After being asked by NGT48’s management company to wait to go public with the incident, Yamaguchi broke her silence one month later. Following her announcement, there was speculation among fans other members of the group had leaked Yamaguchi’s home address and/or schedule to her attackers, and Kaku apparently believed that the five women he accused of drug use in his tweets were responsible, despite internal and police investigations determining that no NGT48 member had any criminal culpability.
Deplorable as Kaku’s motivation may have been, some may find it surprising that you can get arrested in Japan for Twitter accusations that a celebrity uses drugs. However, the Japanese entertainment industry routinely takes an extremely strict anti-drug stance, with studios and music companies quickly cutting ties with even A-list talent if they’re found to have been in possession of illegal substances, and often also purging the performer’s completed works from circulation. As a result, Kaku’s accusations of drug use had the potential to severely damage the careers, and livelihoods, of the idols he was trying to spread false rumors about, resulting in proof that, hard as it may be to believe at times, there actually is a limit to what idol fans are allowed to get away with saying.
Source: NHK News Web, MSN/Mainichi Shimbun
Top image: Pakutaso
● Want to hear about SoraNews24’s latest articles as soon as they’re published? Follow us on Facebook and Twitter!

Idol manager resigns after attack on singer, company claims no group members broke law
Japanese idol singer who was attacked at home makes on-stage apology for “causing commotion”
Kanji ice cream becomes a sell-out hit in Japan
This Tokyo Station sweets sensation sells out daily, but we finally got our hands on it
Tokyo’s life-size Gundam anime mecha statue will be removed this summer
Self-proclaimed Americans arrested for breaking into Punch the monkey’s Japanese zoo habitat
Ichiraku Ramen-inspired ramen sets from Naruto anime pay homage to Naruto, Sasuke, and Sakura
Hundreds of rose bushes in bloom at Tokyo’s off-the-beaten-path, next-to-the-tracks flower street
Studio Ghibli’s president is leaving the company. Will it change how they make anime?
Studio Ghibli adds mini pillows and massive mats to its anime merchandise store in Japan
Starbucks Japan releases two new “chunky” drinks… and matching gel designs for our nails
Starbucks Japan adds a new Frappuccino and Milk to the menu, but are they worth the calories?
161-year-old Kyoto confectionary maker releases new edible Pokémon lineup
7-Eleven Japan now has ramen machines…but only at 41 stores
7-Eleven Japan is releasing Greedy chocolate chip and whipped cream sandwiches
Don’t miss the Tokyo Tower City Light Fantasia ~Summer Landscape 2026~ event during your travels
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
The average age of Japan’s hikikomori shut-ins is getting older, survey shows
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Brand-new Pokémon manhole covers coming to help the recovery of a disaster-stricken part of Japan
Japan’s awesomely beautiful Alpen Route snow corridor is now open
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Japan now has gyoza doughnuts, and they taste like no other doughnut we’ve tried before
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
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
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
“It doesn’t feel like I’m alive” – Idol breaks silence after two male fans attack her at home
McDonald’s offering massive 48-McNuggest bucket in Japan, but true idol fans need to eat 1,200
“There are many mentally unwell girls in AKB48” claims ex-member of Japan’s top idol singer group
Idol singer mega-group AKB48 cancels annual General Election following string of scandals
Exec from idol singer group SKE48’s management company arrested on child prostitution charges
Former idol singer arrested on fraud charges, police say she found victims through dating apps
Foreign man arrested for grabbing former AKB48 idol on Tokyo street, forcing her to ground
AKB48, Japan’s biggest idol singer group, apologizes for selling “Date Tickets”
Japanese idol singer responds to fan who gushes over how much he loves her thighs
Man pretending to be idol singer producer arrested on charge of kidnapping 14-year-old Tokyo girl
Japanese idol singer too sick to dance in music video gets replaced by CG, manga drawings【Video】
Japanese idol singer has an important request for fans: Please use deodorant
Beautiful idol singer leaves show business, opens delicious ramen restaurant in Tokyo