Song Meaning: 櫂 - ヨルシカ

There is an acoustic guitar — just one, recorded with a single microphone in n-buna’s home studio — and it starts playing before any words arrive. The sound is spare and warm, the kind of tone you get from a well-aged Martin when the room is quiet enough to hear the pick touch the string. Then suis begins to sing, and the first thing she says is that she has left. Not a place. Herself.

「私が離れた　幽体離脱」— Watashi ga hanareta yuutai ridatsu — is how “Kai” opens: “I departed — an out-of-body experience.” No buildup, no scene-setting. The narrator’s soul has already slipped free. And for the next four minutes, at a patient 100 BPM, we follow that untethered self as it drifts toward the sea, begging for an oar.

“Kai” (櫂) is the penultimate vocal track on Yorushika’s fifth full album Nininshou (二人称, “Second Person”), released on March 4, 2026. The album is a 22-track opus — Yorushika’s most ambitious to date — conceived in tandem with a physical “epistolary novel” of the same name: a box of 32 envelopes containing roughly 170 handwritten letters between a boy who writes poetry and a literary mentor he calls “Sensei.” The songs on the album are, within this fiction, the boy’s poems set to music. n-buna, who wrote every word and note, described the album’s arc to Apple Music as the boy “rowing out into the sea of language.” That metaphor becomes literal in “Kai,” where the narrator asks to borrow someone’s paddle and sets out across the waves.

A Band That Hides Its Face and Leads with Words

Yorushika is the project of composer n-buna and vocalist suis, active since 2017 and signed to Universal J. Neither member has ever shown their face publicly — n-buna has said he doesn’t want listeners to form impressions based on anything other than the music itself. What they offer instead is unusually dense: every Yorushika album since 2019’s Dakara Boku wa Ongaku wo Yameta (“So I Quit Music”) has been a narrative concept piece, packaged with physical letters, diaries, or art books that expand the story beyond what the songs alone contain.

n-buna came up as a Vocaloid producer, posting songs to Niconico from 2012, and his roots in that community — where lyrics are text-first and melody serves the word — show in how Yorushika’s songs work. The writing is literary in the old-fashioned sense: allusive, image-heavy, and preoccupied with the relationship between art and life. Their 2019 debut album Dakara Boku wa Ongaku wo Yameta shipped with handwritten letters from its fictional protagonist; 2020’s Tousaku (“Plagiarism”) explored the guilt of artistic borrowing; 2023’s Gentou was a “listenable art book.” Each project has pushed the boundary between album and literary object. Nininshou takes it further than any before it — the physical novel is a box of actual sealed envelopes that you open one by one, reading the boy-poet’s correspondence in your hands.

Suis, meanwhile, has a voice that reviewers in Japan consistently describe with the word toumei-kan — a glassy translucence, slightly husky at the edges. n-buna has said he chose her specifically because her voice could handle both rock and the kind of airy, floating music he wanted to make — and because she inhabits the characters of his songs so completely that she once developed a fever from the emotional toll of recording Sousaku. If you’ve heard “Haru,” the Frieren: Beyond Journey’s End opening theme that introduced Yorushika to a global anime audience, or “Tada Kimi ni Hare,” which became a generational anthem on TikTok, you know what that voice sounds like when it’s riding a full band arrangement. In “Kai,” she carries nearly the entire song alone with that guitar, and the intimacy is startling — like finding a handwritten letter instead of a printed page.

幽体離脱 — Leaving the Body, Four Times Over

The phrase 幽体離脱 (yuutai ridatsu) — literally “astral body separation,” the Japanese term for an out-of-body experience — appears five times in the lyrics. Not as a chorus hook. As a recurring announcement, each time preceded by a different subject leaving:

私が離れた　幽体離脱
Watashi ga hanareta yuutai ridatsu
I departed — an out-of-body experience

心が離れて　幽体離脱
Kokoro ga hanarete yuutai ridatsu
My heart drifted free — an out-of-body experience

身体を離れて　幽体離脱
Karada wo hanarete yuutai ridatsu
Leaving the body behind — an out-of-body experience

First the self leaves. Then the heart. Then the body is left behind entirely. The progression is one of increasing disembodiment — a soul peeling itself away from the physical world layer by layer. What makes the phrasing unusual is the polite, almost detached grammar. The narrator uses ～のでしょうが and ～のですが — soft, slightly formal hedging structures, the kind of language you’d use in a letter to someone you respect. “I have no destination, I suppose.” “I wanted to reach the sea, you see.” It reads like a composed farewell, not a crisis.

This formality is the narrator’s character: within the Nininshou novel, this is the boy-poet’s voice, writing to his teacher. Even as his soul departs, he maintains the courtesy of their correspondence. That tension — between the enormity of what’s happening (a soul separating from its body) and the gentleness of how it’s described — is where the song lives.

Butterflies and Seasons That Shouldn’t Coexist

The opening verses build their landscape through images that don’t quite fit together. The narrator acquires butterfly wings (蝶の羽根), feels a spring wind (春風), and glimpses the sun. Then, in the second verse, autumn sunlight hides behind sadness (悲しみに秋の日差しが隠れたみたいだ), and the spring wind returns to carry them again.

Spring and autumn in the same breath. In Japanese poetry, seasonal references (季語, kigo) are governed by strict convention — a haiku that mixes seasons is usually a mistake, and even in modern songwriting, seasonal imagery tends to stay consistent within a verse. n-buna, who has cited Bashō and Miyazawa Kenji as influences across his career, is mixing them on purpose. The narrator exists outside the calendar. When your soul has left your body, seasons stop being sequential and become simultaneous — felt all at once, like colors running together on a canvas. There’s something dreamlike about spring wind and autumn sun coexisting in the same stanza, and that dreamlike quality is the point. The narrator is no longer tethered to normal perception.

Which is exactly the image the lyrics reach for next:

絵の具が溢れていく絵のように
Enogu ga afurete iku e no you ni
Like a painting where the paint keeps spilling over

A painting drowning in its own medium. The art consuming itself. The word 溢れる (afureru, to overflow, to spill over) is one n-buna reaches for often — it implies not just fullness but excess, the moment when a container can no longer hold what’s inside. Here, the painting can no longer contain its own paint. Applied to the narrator, it suggests a self that’s exceeded its own boundaries — emotion, identity, expression all running past the edges. This is the moment right before the first chorus, and it lands as both beautiful and terrifying — creation and dissolution happening in the same gesture. The transition from floating soul to overflowing painting to the chorus’s plea for a paddle is seamless: the narrator has become formless and needs a tool to give their movement direction.

櫂 and 錨 — The Paddle and the Anchor (and Their Hidden Doubles)

The chorus arrives with a direct plea:

貴方の櫂を貸して
Anata no kai wo kashite
Lend me your paddle

悲しむように漕いでゆくだけの
Kanashimu you ni koide yuku dake no
All I do is row as though mourning

私の錨を知って
Watashi no ikari wo shitte
Know my anchor

波よ止まないでくれ
Nami yo tomanaide kure
Waves, please don’t stop

Two objects define the narrator’s condition: the 櫂 (kai, paddle) that belongs to someone else and must be borrowed, and the 錨 (ikari, anchor) that belongs to the narrator.

Here’s what an English reader would miss, and what Japanese listeners hear immediately: 錨 (ikari, anchor) is a near-perfect homophone of 怒り (ikari, anger). The narrator says “know my anchor” and a Japanese ear hears, simultaneously, “know my anger.” The weight that holds the narrator down, that keeps them from moving freely on the water, is rage — toward the people introduced in the next section. And the word 櫂 itself carries the shadow of 悔い (kui, regret) — not an exact match, but close enough to ring.

n-buna didn’t choose ボートのオール (the common modern word for “oar”) or パドル (the English loanword). He chose 櫂, a literary word you’d encounter in classical texts and sea shanties, a word that sounds like a single exhaled breath — kai. Against the archaic 錨. These aren’t contemporary objects. They belong to an older vocabulary, the vocabulary of someone who has been reading too much literature, who thinks in the language of books. Which is precisely who the narrator of Nininshou is.

The Ones Who Laughed

Midway through the song, the narrator turns away from the sea and toward the world left behind:

私の恐れた知らない人
Watashi no osoreta shiranai hito
The strangers I feared

私を笑った人が
Watashi wo waratta hito ga
The people who laughed at me

波の美しさに死んでしまったらいいのに
Nami no utsukushisa ni shinde shimattara ii noni
I wish they’d die from the beauty of the waves

I had to sit with this passage. It’s one of the most striking things n-buna has ever written — not because it’s violent (it isn’t, exactly), but because of the weapon it chooses. The narrator doesn’t wish suffering on their tormentors. They wish beauty on them — beauty so overwhelming it destroys. The grammatical structure ～しまったらいいのに (shimattara ii noni) carries the grammar of irreversible completion, the finality of shimau, wrapped in the wistfulness of noni (and yet, if only). It’s a curse disguised as a prayer.

The verb 漕いでゆく (koide yuku, “to row onward”) uses the archaic ゆく rather than the standard いく. This gives the action a literary, fading quality — rowing not just forward in space, but away in time, like something that’s already becoming memory even as it happens.

When “Rowing” Becomes “Dying”

Between the bridge and the second chorus, a crucial verse arrives:

私を離れて　幽体離脱
Watashi wo hanarete yuutai ridatsu
Leaving me behind — an out-of-body experience

海まで向かったのですが
Umi made mukatta no desu ga
I headed for the sea, you see

身体を忘れてしまった私がいました
Karada wo wasurete shimatta watashi ga imashita
There was a me who had forgotten her body entirely

Notice the shift in grammar: 忘れてしまった (wasurete shimatta) uses the ～てしまう form, which in Japanese conveys that something has happened irrevocably, often with a tinge of regret. The narrator hasn’t merely left the body — she has forgotten it, and the forgetting is complete and irreversible. And she refers to this forgotten-body self in the third person: 私がいました — “there was a me.” The dissociation is total. The self that forgot is observing the self that was forgotten from a distance, reporting on it as if it were someone else’s story. The past-tense polite form いました (imashita) maintains that strange epistolary courtesy — the narrator is describing their own dissolution the way they’d describe a scene in a letter.

The chorus repeats three times across the song. The first and third are identical. The second is not. Listen to what changes:

First chorus:

悲しむように漕いでゆくだけの
Kanashimu you ni koide yuku dake no
All I do is row as though mourning

私の錨を知って
Watashi no ikari wo shitte
Know my anchor

Second chorus:

名もないままに死んでゆくだけの
Na mo nai mama ni shinde yuku dake no
All I do is die without even a name

私の声を知って
Watashi no koe wo shitte
Know my voice

漕いでゆく (rowing) becomes 死んでゆく (dying). 錨を知って (know my anchor) becomes 声を知って (know my voice). The structures are identical — the same rhythm, the same grammatical skeleton — but the content has shifted from motion to mortality, from burden to expression. Rowing was always a metaphor for dying, or dying was always a metaphor for rowing. By the second chorus, the narrator stops distinguishing between them. The anchor, that weight of anger, has been replaced by the voice itself. What the narrator wants witnessed is no longer their pain but their expression.

And between the second and third choruses, the song’s most expansive image:

私の声よ行って
Watashi no koe yo itte
Go, my voice

海を呑み干す千の鳥になれ
Umi wo nomihosu sen no tori ni nare
Become a thousand birds that drink the sea dry

A thousand birds — 千の鳥, sen no tori — which directly echoes the previous track on Nininshou, titled “千鳥” (“Chidori,” literally “a thousand birds” or “plover”). That song, which n-buna wrote after a Miyazawa Kenji poem, is a burst of horn-driven energy about finding one’s own creative voice. “Kai” follows it as the quieter aftermath: the voice has been found, and now it must be released into the world. The wish is staggering in scale — the voice should become enough birds to drink an entire ocean. Not to cross it. To consume it.

The Sound of Floating

The phonetic texture of the lyrics mirrors the drifting they describe. The verses are saturated with the soft consonants N, M, and W — watashi, hanareta, nai no deshou ga, utsukushii, harukaze no kanshoku — sounds that don’t close the mouth or stop the breath. You can sing these syllables without your teeth touching. They float. The dominant vowels are A and I — open and airy, the two lightest vowels in Japanese phonology. Saying 幽体離脱 (yuutai ridatsu) aloud, you can feel how the UU-A-I sequence opens the mouth wide before the sharp RI-DA-TSU snaps it shut, like a door closing behind you. That snap is the departure. The floating sound that precedes it is the state you arrive in.

The chorus shifts to harder sounds: kai wo kashite, koide yuku, ikari wo shitte, tomanaide kure — the K’s and T’s snap the listener out of the drifting and into urgency. The word 漕ぐ (kogu, to row) is itself a physically effortful sound — the back of the throat closes on the G, mimicking the grip-and-pull of rowing. It’s the difference between a soul that’s floating and a soul that’s working.

And then there’s 波よ (nami yo), the direct address to the waves. In Japanese, adding よ after a noun turns it into a vocative — you’re calling out to it, the way you’d call a person’s name across a room. The narrator speaks to the ocean as though it can hear. “Waves, please don’t stop.” The final line of the entire song is 止まないでくれ (tomanaide kure) — “please don’t stop” — the same plea, stripped even of its subject. Just the verb and the desperation. The KU-RE at the end is a bare, almost rough request form — more raw than ください (kudasai), more desperate than ほしい (hoshii). It’s the grammar of someone who has nothing left to lose by asking directly.

A Poet Launches from Shore

Within the album’s narrative, “Kai” sits at the end of the boy-poet’s journey. He has spent the album’s twenty tracks learning from his Sensei, borrowing the words and images of literature to make his own poems. Critic 疎影 (Soei), writing an analysis of the album’s cloud imagery on note.com, described “Kai” as the moment the boy “leaves the mother-body of the literary works he admired and sets out alone onto the open ocean of expression.” The 幽体離脱 (out-of-body experience) then becomes a metaphor for what happens when you stop writing in imitation and start writing from yourself — the familiar body of borrowed language falls away, and what remains is terrifyingly free.

The paddle that must be borrowed — anata no kai wo kashite, “lend me your paddle” — could be the Sensei’s guidance, the literary tradition, the tools of craft that a young writer needs from someone more experienced. The anchor is everything that holds the young poet back: anger, fear, the memory of being laughed at. And the sea? The sea is language itself. Vast, indifferent, capable of destroying you or carrying you.

n-buna told Apple Music that the acoustic guitar opening “Kai” was recorded alone in his studio with a single AKG C12 microphone and his Martin guitar. One microphone. One instrument. For a song about solitude, about a soul stripped to nothing, launching onto the water — the production choice is the meaning. There’s no orchestral swell, no full band. Just a voice, a guitar, and the ocean the lyrics keep reaching for.

The album continues for one more track — “Umi e” (“To the Sea”), a brief guitar instrumental that serves as a coda. After four minutes of “Kai” asking the waves not to stop, the final thing you hear on Nininshou is a guitar alone, playing toward silence. The boy has reached the water.

止まないでくれ

The song ends where it began — with a plea. But the final repetition drops one word. Not 波よ止まないでくれ (“Waves, please don’t stop”) but just 止まないでくれ (“Please don’t stop”). The subject has vanished. The narrator may be speaking to the waves, to the voice, to the music, to the listener, to whatever force keeps things moving forward when the body has been forgotten and the only thing left is the need to keep rowing.

On the album, the track that follows “Kai” is “Umi e” (“To the Sea”) — a brief acoustic guitar instrumental that serves as the album’s final breath. After four minutes of asking the waves not to stop, the last thing you hear on Nininshou is a guitar playing alone toward silence. No voice. No words. The boy has reached the water, and the correspondence with Sensei is over. The letters stop. What remains is the sound of the instrument itself, carrying forward without language — which may be the truest answer to the question the whole album has been asking: what lies beyond borrowed words?

It’s a song about dying and it’s a song about creating, and it may be that n-buna doesn’t see much difference. In “Kai,” the act of making art and the act of leaving the world use the same gestures — departure, solitude, an open sea, a borrowed paddle. The beauty is in the refusal to resolve that ambiguity. The anchor is anger. The paddle is someone else’s. The waves are asked, please, not to stop.

📖 Read the full lyrics with English translation and romaji → /en/artists/yorushika/lyrics/kai/
📝 Learn the Japanese in this song → Coming soon

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