North West, the 12-year-old daughter of Kanye West (Ye) and Kim Kardashian, dropped her debut EP N0rth4evr on May 1, and the closing track "Aishite (愛して)" samples Japanese Vocaloid producer Kikuo's 2015 song "Aishite Aishite Aishite" (Love Me, Love Me, Love Me). Kikuo immediately responded on X with "Of course it's approved." Rolling Stone gave the EP four out of five stars. It is tempting to file this under "celebrity nepo-baby releases music," but that would miss what actually happened. A song sung by Hatsune Miku — a piece of music born from Japanese amateur doujin culture and AI voice synthesis software — was directly sampled, on an EP self-produced by the daughter of arguably the most famous American rapper alive. This is less "J-pop crosses over" than "Japanese internet-amateur music reaches the inside of American hip-hop." Those are not the same event.

What actually happened

On April 27, North West posted a single Instagram with the caption "May 1 #n0rth4evr." The EP arrived on schedule via the independent label gamma — six tracks, each clocking in at roughly two minutes, blending metal guitar, autotune, emo trap, and hyperpop. Crucially, North produced every song on the EP herself. For a 12-year-old, that level of authorship is unusual regardless of last name.

The tracklist runs: "H0w Sh0uld ! f33l," "D!e," "N0rth4evr," "Th!s t!m3," "W0ah," and "Aishite (愛して)." The closer is the Kikuo sample. But "D!e" also samples a Vocaloid track — Suicchi's "Shinitai-chan," via American singer Juby's English-language cover. That means two of the six tracks on this EP are built around Japanese Vocaloid-derived samples. That is not coincidence territory. Two-out-of-six is a creative direction.

Kikuo's response — and why it matters more than "approved"

Kikuo's full comment, posted to X, deserves to be read past the headline:

My humble track "Aishite Aishite Aishite" was sampled — I'm honored. Of course it's approved. And even if it hadn't been authorized, as someone raised in Japanese doujin culture, I genuinely welcome derivative use of my work in all kinds of forms.

The crucial line is the second half. "Even if it hadn't been authorized" — almost no rights holder writes that sentence. Kikuo wrote it instantly. It isn't generosity; it's a declaration of which cultural ground he stands on. Comic Market, Niconico, pixiv, "I tried singing it" / "I tried playing it" / "I tried drawing it" — Japan's Vocaloid scene has, since its inception, been built on the assumption that derivative work is the ecosystem, not a threat to it. The original creator does not tolerate fan reworks; fan reworks are how the original earns its reputation and lifespan. Kikuo's reply takes that worldview and applies it directly to American legal-corporate music culture, without translation.

For Western readers unfamiliar with the term: doujin (同人) refers to Japan's massive amateur and semi-professional creative subculture — fan comics, fan music, fan games, fan derivatives — organized around events like Comic Market, where 500,000+ people gather twice a year to trade self-published works. It is a culture in which secondary creation (二次創作) isn't a gray zone you tolerate; it's often the main act. Vocaloid, with no copyrighted "real singer" attached and a userbase trained to remix everything, is one of the purest products of this worldview.

Why this is a genuinely rare event

J-pop has been borrowed by American artists before. Kyu Sakamoto's "Sukiyaki" hit number one in 1963. Utada Hikaru, Kenshi Yonezu, and Ado have all built American audiences. But Vocaloid being sampled into mainstream American hip-hop is structurally different for three reasons.

First, no human voice. Hatsune Miku is a synthesized character voice from Crypton Future Media's software. Sampling her is closer to sampling a Japanese anime character's vocal performance than to sampling a singer. The American music industry has spent decades treating "is it a real human voice?" as foundational, both legally and aesthetically. North West's EP doesn't even pause at that question — Miku's voice is just there.

Second, no major label. Kikuo, like most Vocaloid producers, is a solo independent creator with no major label or publishing giant in between. The fact that a celebrity hip-hop EP could approach a Japanese individual creator and clear a sample directly — and that the creator could simply tweet "approved" — is itself outside how the American sample-clearance industry normally functions. It works here precisely because Kikuo holds his own rights.

Third, North West chose this herself. Kim Kardashian told Complex that North "doesn't really care about outside opinions" and makes music she likes. Rolling Stone wrote that producing a cross-genre EP at twelve is "an artistic statement that will be difficult to dismiss regardless of who her parents are." A 12-year-old American girl heard a Vocaloid song — almost certainly through TikTok — decided "I want this," and put it as the final track of her own EP. That single decision tells us Vocaloid has crossed from "weird Japanese internet thing" to "something a Western teenager picks from her music library."

The TikTok aquifer underneath all this

"Aishite Aishite Aishite" was uploaded in 2015, but its real penetration into the West is a 2020s TikTok phenomenon. The song crossed 100 million Spotify streams in January 2023 and 110 million YouTube views by July 2025 — making it the first solo Hatsune Miku song to ever cross 100 million views on YouTube. That milestone alone resets what's possible for the synthetic-voice format.

TikTok hosts thousands of covers in English, Spanish, Portuguese, and other languages, with the top covers pulling well over a million likes apiece. Ado performed her cover at the 67th Japan Record Awards. For North West to know this song at 12 isn't surprising — it would be more surprising if she didn't. For her generation, Vocaloid isn't filed under "weird Japanese stuff"; it's just one more sound in the TikTok feed, sitting next to whatever else her algorithm serves up.

The EP's typography — "H0w Sh0uld ! f33l," numerals replacing letters — references early-2000s emo and AIM chatroom aesthetics, but it also slots neatly into Vocaloid fan-art naming conventions. The "#N0rth4evr" music video, with its dark forests, blue hair, spiked wristbands, and decayed mansion, sits in the same visual lineage as Japanese underground idol, visual-kei, and Vocaloid music videos. None of this is accidental.

Who Kikuo is, and why he could be the one chosen

Kikuo, born 1988, uploaded his first Vocaloid track in 2010. By 2017 his composition "Six Greetings" had been included in a Japanese high school music textbook (Educational Arts Company's High School Music 1) — a level of institutional recognition almost no other Vocaloid producer has received. In January 2024, he became the first Vocaloid producer ever to tour the United States, completing 12 sold dates. His current world tour, "Kikuo World Tour 2024–2025 Kikuoland-Go-Round," covers 39 shows across 16 countries. By the time North West's EP arrived, Kikuo's name was already known to a serious slice of the international Vocaloid audience.

"Aishite Aishite Aishite" is, lyrically, much heavier than its toy-bright instrumentation suggests — readings include a girl forced to wear a cursed collar that demands escalating love, and a child crushed under parental expectations. A 12-year-old in 2026 placing this song's theme — a child crying out "love me" and never being satisfied — as the closing statement of her own debut EP is doing more than borrowing a beat. Whether intentional or not, the choice of this Kikuo song carries weight.

A qualitative shift in how Vocaloid lands abroad

For years, "Vocaloid going overseas" has meant fan-translated lyrics, occasional Hatsune Miku live shows in Western cities, TikTok cover trends. What just happened is different in kind, not in degree.

This is no longer "fans loved it and shared it." This is "Vocaloid material entered the construction of a major American hip-hop / pop release as raw sampling material." In the workflow of American music production, Vocaloid has now been treated as a usable, cite-worthy source. Once that happens once at this level of visibility, the second time gets dramatically easier — sampling culture builds on precedent.

The other question this raises: how does Japan respond to this moment? Kikuo's stance — "of course approved, and welcome even unauthorized" — is, frankly, the strongest possible posture a Japanese creator can take when their work crosses into a foreign mainstream. Strict copyright maximalism would have produced either a refusal or a tense negotiation; doujin logic produced a song staying on a 12-year-old's EP in Los Angeles, plus a quote that's now circulating internationally as a model of how Japanese creators can engage with global remix culture.

Is Vocaloid listened to in your country?

How much do Vocaloid songs and Hatsune Miku show up in your country's TikTok, Spotify, or YouTube? Have you heard "Aishite Aishite Aishite" before this EP — and if you have, did you register it as "a Japanese song," or just as something that drifted across your feed? When North West's listeners hit "Aishite (愛して)" at the end of N0rth4evr, what they hear next depends on whether Vocaloid is a known cultural form to them or a totally fresh sound. We'd genuinely like to know what it is where you are. Tell us in the comments.