ココロ (Kokoro)

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Song title
"ココロ" Romaji: Kokoro Official English: Heart
Kagamine Rin act1
Toraboruta-P
Niconico muzie (defunct)

Background

ココロ (Heart) is an original song by Toraboruta-P featuring Kagamine Rin.

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

Asami Shimoda's Cover

File: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

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.

Producers	Toraboruta-P
Categories	Self-remix, arrangement
Description	A piano arrangement featured in Goodbye, Thank You.

Lyrics

• Japanese Lyrics
• Approved English Lyrics

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… aaaahhh~
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

Written by an unknown artist, this version of the lyrics was used in the English version of Hatsune Miku -Project DIVA- F 2nd.

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

• Synthesizer covers
• Human covers
• Arrangements
• Fanmade PVs
• Spin-offs and more

Kagamine Rin's cover

Featuring	Kagamine Rin
Producers	TheXirem
Categories	VOCALOID cover
Description	A version using VocaListener

YOHIOloid's VOCALOUD Mix Cover

Featuring	YOHIOloid
Producers	Vira Jackson
Categories	VOCALOID cover

Rin V4x ft. Len V4x's cover

Featuring	Kagamine Rin, Kagamine Len
Producers	Irora
Categories	VOCALOID cover
Description	A cover, with some parts of the spin off Kokoro・Kiseki. Sung by Kagamine Rin and Len's V4x voicebanks. The PV used is Glider's PV.

Kasane Teto's cover

Featuring	Kasane Teto, Yamine Renri, Namine Ritsu, Tohoku Kiritan
Producers	Tanjiro
Categories	UTAU cover
Description	A mix between Kokoro and Kokoro・Kiseki

Yamai and Usa's Cover

Featuring	Yamai, Usa
Producers	Yamai, Usa
Categories	Human cover

SupaMame's Live Action PV

Featuring	Yamai, Usa
Producers	SupaMame Team (fanmade PV)
Categories	PV, Human cover

Namakonyuroko's Cover

Featuring	Namakonyuroko
Producers	Namakonyuroko
Categories	Human cover

Faeri's English cover

Featuring	Faeri
Producers	Faeri (cover, illustration)
Categories	Human cover, English cover

Speedyblue's English cover

Featuring	Speedyblue
Producers	Speedyblue (cover, mix), Faeri (English lyrics)
Categories	Human cover, English cover

ココロ　-The Perfect PROGRAM-

Featuring	Kagamine Rin
Producers	Masaki (remix), Hekicha (illust, video)
Categories	Remix, Fanmade PV
Description	A popular electronica remix of Kokoko which has reached the 94,800+ views on Niconico. The song was featured in the album "Melody∞Cycle".

sora's Piano Arrangment

Producers	sora
Categories	Arrangement

Umidori san's Violin Cover

Producers	Umidori san (violin), sishenfan (illustration)
Categories	Arrangement
Description	An violin cover using sora's piano arrangment

Fenny Ruliati REMIX

Producers	Fenny Ruliati
Categories	Remix
Description	An electronica remix of Kokoro, available on Fenny Ruliati's YouTube account.

Rock Version

Featuring	Kagamine Rin Append WARM
Producers	Fenny Ruliati
Categories	Arrangement

Brother-P's 3DPV

Featuring	Kagamine Rin
Producers	Brother-P (fanmade PV)
Categories	3DPV

Glider's PV

Featuring	Kagamine Rin
Producers	Glider
Categories	Fanmade PV

Fukusanbutsu-P's PV

Featuring	Kagamine Rin
Producers	Fukusanbutsu-P
Categories	Fanmade PV
Description	It was this PV which popularized the dialogue at the ending of the song.

Hinata's PV

Featuring	Kagamine Rin
Producers	Hinata
Categories	Fanmade PV
Description	A popular PV which has reached 10,000+ views on NND.

Iri's Manga PV

Producers	Iri
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

Featuring	Namakonyuroko
Producers	ClearTranquil
Categories	PV, Human cover

Kokoro・Kiseki

Featuring	Kagamine Len
Producers	Jun-P
Categories	Spin-off, cover

Kokoro・Another

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.

Kokoro x Double Lariat x ACUTE

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)

Producers	Pokkari
Categories	Arrangement; Mashup

Other media appearances

Literatures

This song was featured in the following literatures:

• Piano Solo Yasashiku Hikeru collection. (piano sheet music)
• VOCALOID Best Selection series. (sheet music)

Novel adaptation

• Official Website

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.

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

This song was featured in the following albums:

• Torabotic World
• Goodbye, Thank You
• Torabotic Symphony
• Vocalostar
• Hatsune Miku ‐Project DIVA‐ 2nd NONSTOP MIX COLLECTION
• Nico Nico East Storybook Original Song Collection
• VOCALO★POPS BEST
• VOCALOID BEST from Nico Nico Video (Red)
• The VOCALOID
• Vocalogemini
• Vocalo Supermix
• TIME TO SAY HELLO!
• Project mirai COMPLETE
• LODESTAR

Concerts

This song was featured in the following concerts:

Miku no Hi Kanshasai 39's Giving Day MikuPa Live in Tokyo 2011 MikuPa Live in Singapore 2011 MikuPa Live in Tokyo 2012 MikuPa Live in Hong Kong and Taiwan 2012 MikuPa Live in Sapporo 2013

MikuPa Live in Kansai 2013 MikuExpo Live in Indonesia 2014 MikuExpo Live in LA and NY 2014 SNOW MIKU LIVE! Magical Mirai 2017 (Day 2) MikuExpo Live in Europe 2020 (Paris and Amsterdam only)

Animelo Summer Live 2009

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

• Official Nicomu site

Katsuyoshi Ishizawa, Redjuice.

Video games

This song was featured in the following video games:

• Hatsune Miku -Project DIVA- 2nd
• Hatsune Miku -Project DIVA- Dreamy Theater 2nd
• Hatsune Miku -Project DIVA- Arcade
• Miku Flick/02 (DLC)
• Hatsune Miku Project mirai 2
• Hatsune Miku -Project DIVA- Arcade Future Tone
• Hatsune Miku -Project DIVA- F 2nd
• Hatsune Miku: Dreamy Vocal

Gallery

Kokoro costume, featured in the Hatsune Miku Project mirai 2

"Sayonara Arigatou -Kokoro Answer-" Album Art.

Toraboruta-P's novel "Kokoro".

Promotional artwork by redjuice for the Kokoro Stage Play.

Promotional artwork by redjuice for the Kokoro Stage Play.

"Kokoro" sample card by Nagimiso.SYS.

"Kokoro" sample card by redjuice.

"Kokoro" sample card by Nagimiso.SYS.

External links

Official

• Kokoro novel announcement
• Kokoro novel release date
• Amazon (EN)
• Amazon (EN) (Goodbye, Thank You)
• Amazon (JP)
• KKBOX
• KKBOX (Goodbye, Thank You)
• Spotify
• Spotify (Goodbye, Thank You)
• Spotify (Piano ver.)
• Off vocal

Unofficial

• 初音ミク Wiki
• ニコニコ大百科: nicopedia
• VOCALOID Database

• 萌娘百科: Moegirlpedia
• ニコニコ動画: niconico video
• VOCALOID Lyrics Wiki
• Lyrics — Oricon
• ココロ (トラボルタの曲) — Wikipedia
• Recording — Musicbrainz