Voice Actor Kenjiro Tsuda Loses AI Voice-Cloning Lawsuit — 5ch: “No Matter How You Listen, That’s Clearly Tsuda’s Voice”

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The story

Voice actor Kenjiro Tsuda sued the operator of the video app TikTok, demanding removal of a video that used AI to clone his voice without permission. On September 30, the Tokyo District Court dismissed Tsuda’s claim, apparently mainly because the video had already been taken down before the lawsuit was filed. At the same time, the ruling marked the first time a court has suggested that a person’s voice could be protected under “publicity rights,” making the outcome more nuanced than a simple win or loss. On 5ch, reactions ranged from astonishment at how accurately the voice was reproduced, to an understanding that the removal request was the only real point at issue, to confusion over the fact that no law yet directly regulates AI voice cloning.

Voice actor Kenjiro Tsuda filed a lawsuit against the operator of the video-sharing app TikTok, seeking removal of a video in which someone had used generative AI to imitate his voice without permission. The Tokyo District Court issued its ruling on September 30. Presiding Judge Aya Takahashi dismissed Tsuda’s claim.

(details omitted)

Source: news.yahoo.co.jp / Original article here

What people said

10AnonymousSep 30, 2026 14:16
No matter how you listen to it, that's clearly Tsuda-ken's voice
11AnonymousSep 30, 2026 14:16
So training AI on a voice actor's voice is officially fair game now?
Guess that gives the green light to all those "in the style of ~"
voice-gimmick videos then lol
12AnonymousSep 30, 2026 14:16
Reading the actual ruling, Tsuda-ken's argument held up fine.
It's just that the removal request failed because the video was already deleted — that about right?
16AnonymousSep 30, 2026 14:17
This one really needs to go all the way to the Supreme Court, doesn't it?
17AnonymousSep 30, 2026 14:17
So that's what's going on with all those Hiroyuki videos
I was wondering why there were a ridiculous number of them
18AnonymousSep 30, 2026 14:18
So you're saying copyright doesn't cover a voice that just sounds similar?
19AnonymousSep 30, 2026 14:18
Quote: "In today's (the 30th) ruling, the Tokyo District Court rejected Tsuda's claim on the grounds that the video had already been deleted, while also issuing its first-ever ruling that a voice can be protected under 'publicity rights.'"

That's literally the most important part and this garbage article doesn't even put it in the headline
24AnonymousSep 30, 2026 14:20
Re: #19
This is exactly why crappy journalism is making people dumber
28AnonymousSep 30, 2026 14:20
Re: #19
I see
So the actual point of contention
was only the removal response
Since TikTok itself isn't the one generating the audio
you'd have to go after the original uploader for this to mean anything
82AnonymousSep 30, 2026 14:30
Re: #19
Makes me wonder how it would've gone if the video hadn't been deleted
20AnonymousSep 30, 2026 14:18
Tsuda-ken's voice is more about the character work than being some objectively amazing voice — guess for AI too, it's distinctiveness that matters more than raw quality
21AnonymousSep 30, 2026 14:19
Well of course he wasn't going to win, there's no law covering this

This was a lawsuit meant to raise the issue and push things forward from the start
23AnonymousSep 30, 2026 14:19
Deleting the video doesn't solve the earnings problem though?
Something's off about "no consequences as long as you delete it when caught"

Quote: "Meanwhile, Tsuda's side argued that the unauthorized exploitation of the economic value of his voice was the real issue, noting each video averaged about 1.47 million views and the uploader was earning ¥500,000–750,000 a month."
56AnonymousSep 30, 2026 14:25
Re: #23
Well, the lawsuit was literally just a request to take it down
36AnonymousSep 30, 2026 14:22
Is this one of those threads where OP (Re: #1) framed it badly?
43AnonymousSep 30, 2026 14:23
Re: #36
Can't help it, it's a breaking-news post
40AnonymousSep 30, 2026 14:22
TikTok, for its part, argued it had not infringed any rights, saying the narration was a "generic male voice" and that the platform had publicly disclosed that the uploader made the audio by training the AI on a friend's voice.
67AnonymousSep 30, 2026 14:27
Re: #40
Then why'd you delete it? Exactly.
80AnonymousSep 30, 2026 14:30
Re: #67
Some people just get scared off when a yakuza-type comes at them with accusations, even when they're in the right
That's the whole point of SLAPP-style lawsuits — an intimidation tactic
91AnonymousSep 30, 2026 14:32
Re: #67
It's a hassle, so platforms just delete on report
There are even cases where the real rights holder's own content gets taken down because of a fake copyright group's complaint
46AnonymousSep 30, 2026 14:23
Wait, so does that mean impression/impersonator comedians would lose too if the real person sued them?
51AnonymousSep 30, 2026 14:24
Re: #46
I think that case would just be a straightforward defamation charge
76AnonymousSep 30, 2026 14:29
Re: #46
Doing an impression is a skill,
but this is training AI directly on someone's actual voice and then doing whatever you want with it — that's the nasty part
54AnonymousSep 30, 2026 14:25
So what happens to all those AI Horiemon (Takafumi Horie) videos then?
62AnonymousSep 30, 2026 14:26
Re: #54
The person themselves could get it taken down if they sued
They just leave it alone because it's a hassle
69AnonymousSep 30, 2026 14:28
Even if a voice gets recognized as protectable,
that shouldn't let you shut out someone who just naturally sounds like Tsuda Kenjiro

Unless people who happen to sound like Tsuda Kenjiro are also protected,
the logic doesn't hold together
86AnonymousSep 30, 2026 14:31
Re: #69
Isn't it fine as long as it's entirely self-contained?
Do your own impression, or process your own voice data yourself
Even rap sampling has time-length limits
No matter how much you process it, using the original data at all makes it a rip-off
Process your own voice to sound similar instead
And obviously, don't connect it to the internet
Because ripping data straight off the internet = unauthorized use, plain and simple
73AnonymousSep 30, 2026 14:28
Making this big a deal over just a voice is overblown

Then what about something like this?
↓
https://youtu.be/omHNJmXRV1A
96AnonymousSep 30, 2026 14:34
Re: #73
AI is insane
It can reproduce it this well?
TV production is basically done for
111AnonymousSep 30, 2026 14:37
Re: #73
It's dumb, but
I can't stop watching it lol
88AnonymousSep 30, 2026 14:31
Maybe as a workaround — training it on the real person's voice but keeping a "witness impressionist" on hand to testify "I helped make this" if you get sued — that kind of business might actually take off
97AnonymousSep 30, 2026 14:34
Re: #88
What it was trained on is easy enough to prove, they'd just have to hand over the data
89AnonymousSep 30, 2026 14:32
Basically he just wants money as a "voice usage fee" (lol)
103AnonymousSep 30, 2026 14:35
Re: #89
I think it's only natural to see it that way though
92AnonymousSep 30, 2026 14:32
Yeah, Hiroyuki's and Matsuko's voices are being used for scam narrations all over the place
98AnonymousSep 30, 2026 14:34
Re: #92
I think Hiroyuki and Toshio Okada were both more like "go ahead and use it, don't care"
106AnonymousSep 30, 2026 14:36
Fair point
But why sue when you knew you'd lose?
All it did was hand out official permission that doing this freely is fine lol
119AnonymousSep 30, 2026 14:39
Re: #106
That's not really the story. It's just that the video was already deleted, so there was nothing left to actually demand

Background and Key Points of This Story

Publicity rights attribute the customer-drawing power (economic value) of a celebrity’s name or likeness to that person; the requirements were laid out in a 2012 Supreme Court ruling (the Pink Lady case), and the right has mainly been recognized in relation to names and likenesses since then. Today’s ruling draws attention because it’s the first to suggest this protection could also extend to a person’s “voice.” On 5ch, opinions are split between those reading the dismissal of the removal request as “AI voice mimicry has been ruled legal” and those who understand it as simply meaning the request lost practical purpose because the video was already deleted — a distinction that makes the ruling’s real substance easy to misread. Japan still has no law directly regulating AI voice mimicry, making this an early test case for the legal framework that exists short of one.

*This article is compiled and summarized from the 5ch (Entertainment/Sports Breaking News+) thread “[Lawsuit Lost] Voice Actor Kenjiro Tsuda Claims AI Cloned His Voice Without Permission — Tokyo District Court Dismisses Removal Request Against TikTok Operator.”

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