0. Did poop somehow turn into silver?
Someone says a Japanese meme song has been called “J-POOP” overseas. Yes, poop, not pop. Then a Chinese post uses a name that literally reads “silver dream.” Did an internet joke somehow invent alchemy?
No. The two names come from two completely different jokes. One plays with the name of Japanese pop music; the other swaps Chinese characters without changing their sound. Following both reveals how a Japanese meme changes as it crosses borders.
1. What is INMU KING?
“Manatsu no Yoru no Inmu,” commonly shortened to “Inmu,” was the title of a Japanese adult video. Over time, its awkward performances, quoted lines and images became material for internet remixes, far beyond the original work. “Yajuu Senpai,” often written as “Yajuu Senpai” in English-language spaces, is a recurring character nickname in that meme culture.
YAJU-MC’s 2026 track “INMU KING” is a newer song based on that online culture, accompanied by a music video made with generative AI.[1] Do not confuse the new song with the older film: a fresh format brought an old set of jokes to new viewers.
2. What names are actually documented?
| Language | Recorded form | What it tells us |
|---|---|---|
| Japanese | 真夏の夜の淫夢, 淫夢, 野獣先輩 | Original names |
| Simplified Chinese | 仲夏夜之淫梦, 银梦, 野兽先辈 | “Silver” character substitution is documented [2][3] |
| Traditional Chinese | 仲夏夜之淫夢, 銀夢, 野獸先輩 | Equivalent traditional-character spellings; not proof of universal usage |
| Korean | 한여름밤의 음몽, 음몽, 야수선배 | Localized references exist [4] |
| English | A Midsummer Night's Lewd Dream, Yajuu Senpai | A translated title and a romanized nickname [5] |
Chinese-language creators have titled a version of the song “淫梦王,” while a Korean post added “음몽왕” after “INMU KING.”[6][7] This is evidence of individual usages, not twelve officially approved translations. For languages without clear examples, it is more accurate to keep the original proper name than invent a local nickname.
3. The Chinese trick: different characters, identical sound
In simplified Chinese, 淫梦 and 银梦 are both pronounced yín mèng in standard Mandarin. The first character of 淫梦 means “lewd” or “indecent.” The first character of 银梦 means “silver.” The meaning shifts, but the sound stays.
A Chinese post published in July 2020 discussed using the “silver” spelling to avoid online review.[2] A July 2021 Bilibili explainer even warned readers that its use of the character 银 was a same-sound substitution to avoid moderation.[3]
Imagine entering a building in disguise, then announcing: “Attention, everyone, I am wearing a disguise.” The warning is almost funnier than the disguise.
This documents a tactic used by some posters. It does not demonstrate a nationwide law that automatically bans the original expression on every Chinese website.
4. The Korean joke: J-POP gets an extra O
A Korean-speaking music maker referred to the song as “J-POP… no, J-POOP” while explaining a wish to make a Korean-language cover.[6] The same post supplied “음몽왕” as a local rendering of its title.
J-POP means Japanese pop music. “Poop” means feces. One extra O turns a music label into a bathroom joke.
Crucially, the poster liked the song enough to want to cover it. This is teasing within fandom, not proof that all foreign listeners despise Japanese music. “J-POOP” is not a formally recognized genre or a universally used international name.
5. A bathroom joke with a real No. 2 ranking
Oricon’s weekly YouTube chart, published October 7, 2026, covers September 25 through October 1.[8][1]
| Rank | Track | Weekly views |
|---|---|---|
| 1 | EBiDAN — Yes! 東京 | 5,944,093 |
| 2 | YAJU-MC — INMU KING | 3,866,043 |
| 3 | M!LK — 時空超えてユニバース | 3,617,285 |
The supposedly “poopy” song sat at No. 2 next to mainstream acts. Reality delivered the punchline without changing a single official chart label.
The figures are weekly chart views of eligible videos associated with the song, not lifetime views of one official video. Nor was it No. 2 on every music chart.[8]
6. A timeline prevents a misleading story
In July 2020, Chinese commentary already described the “silver dream” substitution.[2] In July 2021, another writer explicitly explained why the substitute character was being used.[3] The INMU KING song and its multilingual remakes arrived in 2026.[1][6][7] The YouTube chart result followed on October 7, and Japanese social media discussed the overseas “J-POOP” joke on October 8.[8][9]
So the Chinese name was not invented in response to the 2026 song. It belongs to a longer history of adapting this meme for another platform and writing system.
7. Four things not to mix up
Is writing 淫梦 always forbidden in China? No universal rule has been established by these examples; they show particular posters avoiding review.
Does 银梦 mean poop? No. Its literal characters mean “silver dream.” The bathroom joke is J-POOP.
Do all overseas fans call this J-POOP? No evidence supports that sweeping claim. We have specific posts, not a global survey.
Does every language have one official Inmu name? No. An attested local nickname, a translation, and a romanized Japanese name are different things.
8. So did poop become silver?
Only if you combine two unrelated transformations. J-POOP changes the sound and meaning of a music label. 银梦 changes characters while preserving pronunciation. The real story is not alchemy, but how communities reshape names to joke, search, share or evade moderation.
One meme crosses a border. One version gets an extra O; another gets a precious metal. The culture travels. Its dignity may not.
References (9)
- Oricon BiZ, YouTube chart commentary, 2026-10-07 biz.oricon.co.jp
- Bilibili, Chinese explainer, 2020-07-11 bilibili.com
- Bilibili, Chinese remix-culture explainer, 2021-07-18 bilibili.com
- Korean usage example, 2020-01-27 x.com
- English-language title record medley.bepis.io
- Korean-language music producer's J-POOP/음몽왕 post (profile source) x.com
- Chinese-language song version 淫梦王 / INMU KING youtube.com
- Oricon, Weekly YouTube Chart, 2026-09-25–2026-10-01 contents.oricon.co.jp
- Japanese discussion of the J-POOP expression, 2026-10-08 x.com
