Image of "ココロ (Kokoro)"
Song title
  • "ココロ"
  • Romaji: Kokoro
  • Official English: Heart
Published March 2, 2008, with 2,841,000+ Niconico views
Featuring
Producers
Links

Background[edit | edit source]

"Kokoro" is a song featuring Kagamine Rin by Toraboruta-P.

The song tells a story about a robot (Rin) made by a lonely scientist, but is missing a program unable to be made: a heart. Some time after her creation, her scientist passes away, leaving her alone for several hundred years. She begins to wonder about her creation and makes a wish. She accesses the files that her creator had left and finally gains a heart. In the process, she discovers what it's like to be happy and sad. With her new feelings, she gratefully dedicates all of the songs that she sings to her creator. In the end, the miracle robot had a short in her system and could no longer sing. However, she had a smile on her face in her last moments, resembling an angel.

A prequel named Goodbye, Thank You was made for the album of the same name. It tells the story of the robot's creation and the making of the heart told from the scientist's (Gackpo) point of view.

This song has entered the Hall of Legend.

Succeeding versions[edit | edit source]

Asami Shimoda's Cover
Album Asami Shimoda PRISM.jpg
Featuring
Asami Shimoda
Producers
Toraboruta-P
Categories Human cover
Description
A cover of the song by Asami Shimoda, featured in Prism.
The VOCALOID ver
THE VOCALOID produced by Yamaha.png
Featuring
Kagamine Rin
Producers
Toraboruta-P
Categories Self Cover; VOCALOID cover
Description
A cover of the song made with VocaListener featured in The VOCALOID.
Kokoro - Piano ver.
Kokoro pic.jpg
Producers
Toraboruta-P
Categories Self Remix, Arrangement
Description
A piano arrangement featured in Goodbye, Thank You.

Lyrics[edit | edit source]

Japanese (日本語歌詞) Romaji (ローマ字)
孤独な科学者に作られたロボット kodoku na kagakusha ni tsukurareta robotto
出来栄えを言うなら”奇跡” dekibae o iu nara "kiseki"
だけどまだ足りない 一つだけ出来ない dakedo mada tarinai hitotsu dake dekinai
それは「心」と言うプログラム sore wa "kokoro" to iu, puroguramu

幾百年が過ぎ ikuhyaku toshi ga sugi
独りで残された hitori de nokosareta
奇跡のロボットは願う kiseki no robotto wa negau
知リタイ アノ人ガ shiritai ano hito ga
命ノ 終リマデ inochi no owari made
私ニ 作ッテタ 「ココロ」 watashi ni tsukutteta "kokoro"

今 動き始めた 加速する奇跡 ima ugoki hajimeta kasoku suru kiseki
ナゼか ナミダが 止まらナい・・・ nazeka namida ga tomaranai…
ナぜ 私 震える? 加速する鼓動 naze watashi furueru? kasoku suru kodou
こレが私の望んだ「ココロ」? kore ga watashi no nozonda "kokoro"?

フシギ ココロ ココロ フシギ fushigi kokoro kokoro fushigi
私は知った 喜ぶ事を watashi wa shitta yorokobu koto o
フシギ ココロ ココロ フシギ fushigi kokoro kokoro fushigi
私は知った 悲しむ事を watashi wa shitta kanashimu koto o
フシギ ココロ ココロ ムゲン fushigi kokoro kokoro mugen
なんて深く切ない・・・ああああ~~ nande fukaku setsunai… aaaa~~

今 気付き始めた 生まれた理由を ima kizuki hajimeta umareta riyuu o
きっと独りは寂しい kitto hitori wa sabishii
そう、あの日、あの時 sou, ano hi, ano toki
全ての記憶に宿る「ココロ」が溢れ出す subete no kioku ni yadoru “kokoro” ga afuredasu
今 言える 本当の言葉 ima ieru hontou no kotoba
捧げる あなたに sasageru anata ni

アリガトウ・・・ この世に私を生んでくれて arigatou… kono yo ni watashi o unde kurete
アリガトウ・・・ 一緒に過ごせた日々を arigatou… isshoni sugoseta hibi o
アリガトウ・・・ あなたが私にくれた全て arigatou… anata ga watashi ni kureta subete
アリガトウ・・・ 永遠に歌う arigatou… eien ni utau

Below is an unofficial English translation: via Project DIVA. Amendments may have been made to the original translation. —Featured in Hatsune Miku -Project DIVA- F 2nd, the writer is uncredited.

A robot made by a lonely scientist
In almost every way a "miracle"
But this miracle wasn't enough
There was one thing it couldn't run:
A program called "Kokoro"

Centuries pass
Left all alone
The miracle robot pleads
I want to know how he felt
Working till his dying day
Making it for me
My "Kokoro"

Just now it started, a quickening miracle
For some strange reason the tears won't stop
Why am I shaking? The accelerating beat
Is this the "Kokoro" I wanted?

Now I can say these words of truth
And offer them to you

Thank you…
For bringing me into this world
Thank you…
For the days spent together
Thank you…
For all you've given me
Thank you…
Forever I'll sing

Derivatives[edit | edit source]

TheXirem's Cover ft. Kagamine Rin
YouTube logo
[yt]
Featuring
Kagamine Rin
Producers
TheXirem (cover), Brother-P (video)
Categories VOCALOID Cover
Description
A cover made using VocaListener.
Ree-chan's Cover ft. GUMI [VOCALOUD Mix]
YouTube logo
[yt]
Featuring
Producers
Ree-chan (cover, VSQx), meola (illust)
Categories VOCALOID Cover
Jasputing's Cover ft. flower [VOCALOUD Mix]
YouTube logo
[yt]
Featuring
Producers
Jasputing (cover), Area (illust), Ree-chan (VSQx)
Categories VOCALOID Cover
Vira Jackson's Cover ft. YOHIOloid [VOCALOUD Mix]
YouTube logo
[yt]
Featuring
Producers
Vira Jackson (cover, illust, video), Ree-chan (VSQx)
Categories VOCALOID Cover
Lucifer's Cover ft. Kagamine Rin V4X
YouTube logo
[yt]
Featuring
Kagamine Rin V4X
Producers
Lucifer (cover, VSQx)
Categories VOCALOID Cover
Irora's Cover ft. Kagamine Rin and Len V4X
YouTube logo
[yt]
Featuring
Producers
Irora (cover), Glider (video), NeeMiSo (UST)
Categories VOCALOID Cover
Description
A mash-up with Kokoro・Kiseki.
ryusouta's Cover ft. Kagamine Rin V4X
YouTube logo
[yt]
Featuring
Kagamine Rin V4X
Producers
ryusouta (cover, video, VSQx)
Categories VOCALOID Cover
NeeMiSo's Cover ft. Natsu Tama and Harune Shirori
YouTube logo
[yt]
Featuring
Producers
NeeMiSo (cover, UST)
Categories UTAU Cover
Description
A mash-up with Kokoro・Kiseki.
Tanjiro Taidana's Cover ft. Kasane Teto
YouTube logo
[yt][sc]
Featuring
Kasane Teto Yamine Renri, Namine Ritsu, Tohoku Kiritan (chorus)
Producers
Tanjiro Taidana (cover, video, UST)
Categories UTAU Cover
Description
A mash-up with Kokoro・Kiseki.
ryusouta's Cover ft. Hatsune Miku NTβ
SoundCloud logo
[sc]
Featuring
Producers
ryusouta (cover), iXima (illust)
Categories Piapro Studio Cover

Shiroko Diamond Sparkle's English Cover
YouTube logo
[yt]
Featuring
Shiroko Diamond Sparkle
Producers
*Razzy (lyrics), Yoru (subtitles)
Categories Human Cover; Alternative Language
English Chorus of 12
YouTube logo
[yt]
Featuring
cir, LucyHasYou, Queen KoKo, saint, KT, xildy, Shiroko Diamond Sparkle, k*chan, joakkar, zoozbuh, Caspy, KEH
Producers
*Razzy (lyrics), saint (illust, video)
Categories Human Cover; Alternative Language
FaeriMagic's English Cover
YouTube logo
[yt]
Featuring
FaeriMagic
Producers
FaeriMagic (cover, lyrics)
Categories Human Cover; Alternative Language
Meido-kun's English Cover
YouTube logo
[yt]
Featuring
Meido-kun
Producers
Meido-kun (cover, mixing), FaeriMagic (lyrics)
Categories Human Cover; Alternative Language
SupaMame's Live Action MV
YouTube logo
[yt]
Featuring
Producers
Akia (Rin), Syao (Len)
Categories Live Action MV

Piano Arrangement
Niconico logo
[nn]
Producers
sora (cover, video)
Categories Arrangement
Piano Arrangement
Niconico logo
[nn]
Featuring
The Perfect PROGRAM
Producers
Masaki (arrange), Hekicha (illust, video)
Categories Arrangement; Fanmade PV
Description
A remix featured in the album Melody∞Cycle.
999777FRA REMIX
YouTube logo
[yt]
Producers
999777FRA (arrange)
Categories Arrangement
Violin Piano Duet
YouTube logo
[yt]
Producers
Umidori san (violin), sora (piano), sishenfan (illust)
Categories Arrangement
Rock Version
SoundCloud logo
[sc]
Featuring
Producers
999777FRA, uzP (arrange), SakuneUtau04 (VSQx)
Categories Arrangement

Brother-P's 3DPV
Niconico logo
[nn]
Featuring
Kagamine Rin
Producers
Brother-P (fanmade PV)
Categories 3DPV
Glider's PV
Niconico logo
[nn]
Featuring
Kagamine Rin
Producers
Categories Fanmade PV
Fukusanbutsu-P's PV
Niconico logo
[nn]
Featuring
Kagamine Rin
Producers
Categories Fanmade PV
Description
It was this PV which popularized the dialogue at the ending of the song.
Hinata's PV
Niconico logo
[nn]
Featuring
Kagamine Rin
Producers
Categories Fanmade PV
Description
A popular PV which has reached 10,000+ views on NND.
Iri's Manga PV
Niconico logo
[nn]
Producers
Categories Adaptive Manga
Description
A touching take on the ココロ story by Ema Arihara, showing the true intimacies the robot and scientist experience. A mix of the original song, piano arrangement and orchestral arrangement are played throughout the slideshow. It is considered the epitome of the "Kokoro" saga and the emotions it invokes. The doujinshi is available to read in pixiv.
ClearTranquil's Live Action PV
YouTube logo
[nn][yt]
Featuring
Namakonyuroko
Producers
ClearTranquil
Categories PV, Human cover

Kokoro・Kiseki
Niconico logo
[nn]
Featuring
Producers
Categories Spin-off, cover
Kokoro・Another
Thumb-etc.png
Categories Spin-off
Description
The songs of the series are arrangements of "Kokoro" and "Kokoro・Kiseki". Suginohito and his group, who produced the series, changed the original lyrics and they are based on a fanfic written by Oshimaino-P. They announced the episodes of the series has nothing to do with the originals.[1]
Kokoro x Double Lariat x ACUTE
YouTube logo
[yt]
Featuring
Megurine Luka
Categories Mashup
Description
a mashup of blending in three popular vocaloid songs. Kokoro, Double Lariat and ACUTE
Pokkari's Music Box Arrange (Kokoro x Koroko・Kiseki)
Niconico logo
[nn]
Producers
Pokkari
Categories Arrangement; Mashup

Other media appearances[edit | edit source]

Literatures[edit | edit source]

This song was featured in the following literatures:

Novel adaptation[edit | edit source]

Toraboruta-P announced that on April 27, 2012; (previously it's stated to be April 17, but it was delayed) he will release his novel entitled "Kokoro", a novel based on the song.

The novel is written by Katsuyoshi Ishizawa and illustrated by Nagimiso.SYS, an illustrator most notable for his PV of "Roshin Yuukai" also a card illustration by redjuice. The price is 1,200 yen and was available for purchase in Amazon on April 27.

A crossfade of the novel ("Kokoro" arrangement by Toraboruta-P and video by Nagimiso.SYS) can be seen on niconico and YouTube. A month after the novel was put on sale on Amazon, it was announced that the "Kokoro" novel had sold out and could no longer be purchased from Amazon. There is currently no news of a second wave of printing; it has sold faster than expected.[2]

The novel tells the story of a group of scientists who worked on realistic-looking robots. Their works included 'Number 02' (Kagamine Rin) and 'Mirai' (Hatsune Miku). One of the scientists wished to install the Heart, a program that allowed the robots to have feelings, into Number 02. However, the others refused, due to the fact that a few years back, when they installed the program into 'Number 01 Rin', the robot went insane and killed a scientist named Kagamine Rin. The robot has since been modified into 'Number 02'. The Heart, which still contained memories of Rin, was secretly installed into Number 02. Many centuries later, Number 02 woke up and and found out that she was surrounded by a search party. There she meets 'B' (Kagamine Len), who explains to her that they were looking for the Heart. Number 02 then explains the origins of the Heart…

Discography[edit | edit source]

This song was featured in the following albums:

Concerts[edit | edit source]

This song was featured in the following concerts:

Animelo Summer Live 2009[edit | edit source]

Animelo is an Anime-Central concert where songs from various anime are performed in a concert-like fashion. It was here that Miku appeared as a surprise in 2009. Not only Miku came, but Rin and Len's voice provider, Asami Shimoda, sang "Kokoro" as a teaser for introducing Miku, who sang みくみくにしてあげる♪ (Miku Miku ni Shite Ageru♪). The song Black★Rock Shooter followed Miku's appearance, along with its anime's trailer.

Stage Play[edit | edit source]

Katsuyoshi Ishizawa, Redjuice.

Video games[edit | edit source]

This song was featured in the following video games:

Gallery[edit | edit source]

References[edit | edit source]

  1. http://unison.xrea.bz/kkranother/
  2. ANN - 'Kokoro' Vocaloid Song, Stage Play Adapted Into Light Novel.

External links[edit | edit source]

Official[edit | edit source]

Unofficial[edit | edit source]

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