Oku Hiroya Reveals: Popular Manga ‘Thunder 3’ Author ‘Yuki Ikeda’ Was His Own Pen Name All Along

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The story

Manga artist Hiroya Oku (59), known for works like “GANTZ” and “Inuyashiki,” revealed on his X (formerly Twitter) account on September 24, 2026 that “Yuki Ikeda is my pen name.” “Thunder 3,” serialized under the Ikeda name, is a popular series that even got an anime adaptation this past July. Oku explained that he used a pen name because chapter one’s twist “would lose its punch” if readers knew his real name going in — he wanted first-time readers to be truly surprised. On 5ch, users discussed how some fans had long suspected the truth based on similarities in art style, as well as the fact that the editorial department had previously described Ikeda as “Oku’s chief assistant, a separate person.”

9/24 (Thu) 21:48

Manga artist Hiroya Oku (59), known for numerous hit works including “GANTZ” and “Inuyashiki,” updated his X (formerly Twitter) account on the 24th to reveal that he is the author of that popular manga.

Oku came clean, writing: “Yes. As you all know. Yuki Ikeda is my pen name,” confirming he is the author of the popular manga “Thunder 3,” which also got an anime adaptation this past July.

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

What people said

7AnonymousSep 24, 2026 23:16
"The reason I used a pen name is that chapter one's twist would lose its punch with my name attached, so I wanted first-time readers to be as surprised as possible," he explained.


Well, obviously.
9AnonymousSep 24, 2026 23:17
The manga could go photorealistic by tracing in photos,
but the anime couldn't use that trick,
so as a workaround they resorted to sticking ●● marks near characters' faces.
11AnonymousSep 24, 2026 23:17
More than that, that boring 'giant woman' manga (i.e. Kanreki Hime) wasn't needed, honestly~
13AnonymousSep 24, 2026 23:17
Was he lashing out at Yamauchi because it hit a nerve?
27AnonymousSep 24, 2026 23:22
Re: #13
What was that about, lol?
83AnonymousSep 25, 2026 00:15
Re: #13
Because he got called by his bare name, no honorific.
14AnonymousSep 24, 2026 23:18
The moment this series ended, he started a new one in another magazine — pretty blatant.
15AnonymousSep 24, 2026 23:18
Oku reads 2ch, and criticism gets exposed, so watch yourselves.
16AnonymousSep 24, 2026 23:19
Re: #15
Tastes like victory! (メシウマ — slang for savoring someone else's misfortune)
64AnonymousSep 24, 2026 23:51
Re: #15
As usual, it's not just Oku — most manga artists and celebrities sneak onto 5ch too, lol
18AnonymousSep 24, 2026 23:19
The back of his head is completely flat, huh.
Wonder why that's the one part he can never draw right.
19AnonymousSep 24, 2026 23:20
It was pretty much confirmed once the serialization started running late.
21AnonymousSep 24, 2026 23:20
Draw us an epilogue for after Gantz's finale before you retire…
22AnonymousSep 24, 2026 23:20
Couldn't they do something about the anime's snail pace?
23AnonymousSep 24, 2026 23:20
If I'd known, I wouldn't have started reading in the first place.
Total waste of my time.
24AnonymousSep 24, 2026 23:21
Pretty much the same setup as the ending of Gantz.
25AnonymousSep 24, 2026 23:21
There was someone on the old Oku thread on Geisports (celebrity/sports board) who kept insisting Yuki Ikeda was a former assistant — wonder how they're doing now.
26AnonymousSep 24, 2026 23:22
The alien and spaceship designs had that GANTZ-material feel to them,
so I figured it was either a former assistant or someone from the same studio —
turns out it was the man himself.
Then again, it's in Magazine, so I never imagined it could actually be him.
29AnonymousSep 24, 2026 23:24
What's a 'donden'? (short for どんでん返し, meaning a dramatic plot twist)
75AnonymousSep 25, 2026 00:04
Re: #29
Come on, you know exactly what it is —
you'd get it if you saw it, straight up.

…huh?
30AnonymousSep 24, 2026 23:24
So it really was him.
I'd figured it was Oku's kid drawing it.
33AnonymousSep 24, 2026 23:25
I think I'd have still watched it if they'd said so from the start —
I dropped it right at the very beginning.
35AnonymousSep 24, 2026 23:28
Seriously?! Had no idea.
I did think the art looked similar, though.
36AnonymousSep 24, 2026 23:29
Kanreki Hime is too niche, so maybe he wanted to draw something more shonen-style.
69AnonymousSep 24, 2026 23:57
Re: #36
Thunder 3 actually started first.
Apparently Kanreki Hime is meant to be Oku's magnum opus.
37AnonymousSep 24, 2026 23:29
Oh —
someone pointed this out in an earlier thread, and it turned out to be true.
38AnonymousSep 24, 2026 23:29
If you can tell from episode one anyway, he might as well have just used 'Hiroya Oku.'
39AnonymousSep 24, 2026 23:29
It's like saying nobody's ever revealed who drew this King Bomber — yeah right, ha.
40AnonymousSep 24, 2026 23:29
Wanting new readers to approach it without preconceptions from the 'Hiroya Oku' name isn't a bad goal.
Anyone who already knows will spot it from the art style anyway, so that's already factored in.
Kind of an interesting experiment, no?
43AnonymousSep 24, 2026 23:32
I didn't even know it existed, so if they'd put his name on it I might actually have watched it.
Now that I've skimmed the PV, though… eh, I'll pass.
56AnonymousSep 24, 2026 23:43
The fact that this is happening at Kodansha, though…
I wonder if their relationship with Shueisha isn't great?
65AnonymousSep 24, 2026 23:52
Re: #56
Since Gantz, it's been:
"Inuyashiki (Kodansha)", "GIGANT (Shogakukan)",
"Kanreki Hime (Shogakukan)", "Thunder 3 (Kodansha)"
58AnonymousSep 24, 2026 23:45
I haven't read it so I wouldn't know, but if he's saying 'as you all know,' don't the fans already know?
61AnonymousSep 24, 2026 23:48
Re: #58
There was the whole 'former assistant' theory and other stuff going around.
63AnonymousSep 24, 2026 23:50
Re: #61
Ah, that makes sense —
no wonder the art style is similar.
67AnonymousSep 24, 2026 23:54
Re: #61
More than a 'theory' — I feel like the editor actually stated publicly that Ikeda was Oku's chief assistant and a separate person from Oku.
89AnonymousSep 25, 2026 00:24
Didn't even know there was an anime.
Checked the anime thread and yep, it's the usual Netflix-anime situation.
Still only on thread 2 over there, and doesn't look like they'll even get through it.
94AnonymousSep 25, 2026 00:27
Re: #89
Isn't it on terrestrial broadcast, not Netflix?

Background and Key Points of This Story

Hiroya Oku is known for works like “GANTZ” and “Inuyashiki,” and in recent years has also been serializing “Kanreki Hime” in a monthly magazine. “Thunder 3” ran in a Kodansha monthly magazine and got a TV anime adaptation in July 2026; it was originally published under the name of an unknown newcomer, Yuki Ikeda. On the thread, some fans had long theorized that “Yuki Ikeda = Hiroya Oku” based on similarities in art style, while others noted that the editor in charge had previously stated that Ikeda was “Oku’s chief assistant, a separate person” — a discrepancy Oku himself has not addressed. Worth noting too: Oku says he chose to use a pen name because he wanted readers to experience chapter one’s story without any preconceptions tied to his own name.

※This article is excerpted and summarized from the 5ch (Geisports Sokuho+) thread ““GANTZ” Creator Hiroya Oku: “Yuki Ikeda Is My Pen Name” — Reveals He’s the Author of Popular Manga “Thunder 3,” Explains Why He Used a Different Name.”

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