Short answer: On 8 November 2026 Vinland Saga manga creator Makoto Yukimura praised a Thorfinn image in a wheat field, was told in a reply that it was AI-made and that the poster was passing off other artists’ work, and answered “Is that so? AI does a good job.” After criticism he wrote that the line was an observation, not approval: “AI steals art, and I’m in trouble if AI develops too much.” On 9 November he said he often likes and reposts fan art quickly, that when he went back through his reposts he found about four images that used AI or looked plagiarised, that he cannot tell the difference between AI and original images, and that he will be more careful. We cannot verify the original claim about the image. The useful point for fan artists is that a viral repost does not tell you whether a work is original, so keep dated originals. A TimeBind dates the files you hold. It does not show whether an image is AI-made or original.
Last checked 13 November 2026. General information for fan artists, fans and anyone who reposts art, not legal advice. This page reports what the cited outlet and Makoto Yukimura’s own posts say. We have not seen the images involved and cannot say which were made with AI or copied.
Table of Contents
What is documented
Anime News Network (posted 9 November 2026, 23:59 EST) reports that Yukimura commented on an X image based on Vinland Saga showing Thorfinn in a wheat field, saying it was wonderful and that if all people were rich enough, “we wouldn’t have to fight.” Another user replied that the image was made with generative AI and that the poster had been stealing human-made art from fandom artists. Yukimura answered, “Wow, Is that so? AI does a good job.” ANN reports that critics said he had “washed,” and that after his clarification many fans took a more favourable view.
Yukimura’s clarification on 8 November reads: “Wow haha, I surprised everyone because I said ‘AI does a good job.’ AI steals art, and I’m in trouble if AI develops too much. The reason why we are in trouble is because AI does a good job to some extent. It’s just a fact. It is not an affirmation.” On 9 November he posted: “I like to repost the fan art that appeared on the timeline. However, I recently learned that there are AI images in the pictures that have been reposted so far,” and, “I’m sorry everyone, I really can’t tell the difference between AI images and original images. I’ll be careful from now on.” In a Japanese post the same day he said that going back through about a week of reposts he found four images that used AI or looked like theft, that he had not noticed, and that he would be careful with likes and reposts.
The original accusation that the wheat-field image was AI-made and that the account stole art comes from a reply quoted by ANN. We could not verify it.
Why this matters to fan artists and fans
The episode shows two familiar problems. For fans, a like or repost from someone with a large following can look like endorsement of a work that may be copied or AI-made, and the person doing the reposting often cannot tell. For artists, a copy passed off as original can spread faster than the original, so the question becomes who can show they posted first and from what source file.
It also shows how the response matters. Yukimura’s later posts, which draw a line between observing that AI is good and endorsing it, and which commit to checking before reposting, is the kind of plain correction that kept the conversation about the work and not about him.
Why people are searching for this
Measured on 13 November 2026. The 8 November clarification had 326,455 impressions and 16,262 likes. The 9 November apology posts had 61,812 impressions and 2,569 likes, 96,808 impressions and 4,752 likes, and 119,152 impressions and 6,239 likes. Counts keep moving.
Checklist for fan artists and fans
- Keep your work-in-progress files. Sketches, layers and exports, with their dates, from the start of the piece.
- Post a dated original first. Keep the first-post URL and a screenshot of the date and file.
- Credit and link in the same post. Name the character’s source and your own handle so reposts keep a path back.
- Record copies. If someone reposts your work as theirs, save the URL, date and a screenshot, and keep your original separate.
- Report through the platform. Keep the report text and any reply. See DMCA takedown evidence for your artwork.
- Fans: check before you boost. Look for an original post, a process image or a credit, and look at the account’s history before reposting.
- If you are accused, answer calmly. Share process files and dates, not a fight. See falsely accused of using AI art.
- Date your files at the start. Fingerprint the working file before you post.
What a TimeBind does and does not show
A TimeBind is a dated, checkable record that an exact file existed no later than a recorded time and still matches. The SHA-256 fingerprint is made in your browser and the file is never uploaded. The record is anchored to Bitcoin (a Merkle root in an OP_RETURN). Your first Pooled TimeBind is free; after that, TimeBinds start from US$5, and an ASAP TimeBind is US$15. See how it works.
For fan art, it can date your working file and export as you hold them. It does not show that an image is original, does not show that someone else’s image is AI-made, and does not decide who copied whom. Use it as one dated record next to your process files and the first-post link.
Limits
This page relies on Anime News Network (9 November 2026), Makoto Yukimura’s own X posts of 8 and 9 November 2026 and the other posts named above. We have not seen the wheat-field image, cannot confirm that it was AI-made or that the account stole art, and take no side. Whether any fan work infringes a copyright depends on the work and the country, and this is not legal advice.
Tools that can help
Use the bulk SHA-256 manifest to fingerprint working files and exports, and the file date metadata inspector to see what dates a file carries. For related reading see what illustrators should keep when accused of AI and how to show an image is not AI.
Frequently Asked Questions
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What did Makoto Yukimura say about AI art?
He first replied “AI does a good job” to a claim that an image was AI-made, then said it was an observation, not approval, and that AI steals art and threatens artists.
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Did Yukimura repost AI-made fan art?
He said so himself. On 9 November 2026 he wrote that he had learned AI images were among the pictures he had reposted, and that he cannot tell AI from original images.
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Was the Thorfinn wheat-field image AI-made?
A reply quoted by Anime News Network said so. We could not verify it.
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What should a fan artist keep to show their work is original?
Work-in-progress files with dates, the first post with its date, and records of any copies and reports.
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Can a TimeBind show an image is not AI?
No. It shows that exact files existed no later than a recorded time and still match. It does not show how an image was made.
Sources checked
- Anime News Network, “Vinland Saga Creator Makoto Yukimura Addresses Comments on AI Imagery,” posted 9 November 2026, https://www.animenewsnetwork.com/interest/2026-11-09/vinland-saga-creator-makoto-yukimura-addresses-comments-on-ai-imagery/.243647 (read 13 November 2026)
- X posts by Makoto Yukimura (@makotoyukimura), 8 and 9 November 2026, including https://x.com/makotoyukimura/status/2119288913500287049 (read 13 November 2026)
- X trending summary on the SquidgeWorld and Yukimura AI-art stories, updated 9 November 2026 (read 13 November 2026)
Date your working files before you post fan art
Your first Pooled TimeBind is free, with no credit card required. After that, TimeBinds start from US$5, and an ASAP TimeBind is US$15. Click here to start, or see plans and pricing.
