KOKORO (ココロ/kokoro) is one of the more notable songs sung by Rin Kagamine and produced by Toraboruta-P. The song is very popular among Vocaloid enthusiasts and has spawned a large number of covers and PVs.
Original Song and PV
ココロ (KOKORO) / (Heart or Soul)
(Original video by Toraboruta-P)
- In Kokoro , Rin is a robot made by a lonely scientist (This could be probably Len). But she is missing something that can't be found in a program: a heart and a mind (kokoro means both heart and mind). Eventually her creator passes away, leaving her alone for several hundred years. Eventually she begins to wonder about the man who created her, and accesses his research. Discovering more and more about the scientist and how hard he worked to create a kokoro for her, the robot is moved and is awakened to a world of new feelings. Overcome with emotion, the robot sings her feelings of sadness and gratitude to the person who created her. However, the kokoro which she found herself was too great for her fake body, and after some time the robot passes away.
Vocaloid Song and PV Covers
ココロ・キセキ (KOKORO/KISEKI) / (Heart or Soul/Miracle)
(Original video by Jun-P)
- KOKORO/KISEKI serves as a prologue to KOKORO, telling the story of the scientist who created the robot in KOKORO. The scientist, represented by Len, creates a robot but realizes that she is missing something important: her kokoro. He wishes to share happiness and sadness with her, and so he begins working tirelessly at creating a heart and mind for her. However, as he works the scientist becomes aware of how his life will eventually come to an end. As he begins to lose hope, a miracle (KISEKI) suddenly happens: he recieves a message from the robot from the future, after she has created her own kokoro. Seeing how happy and yet tragic she looks, and realizing that his research was not all for nothing, the scientist obtains peace and passes away in tranquility.
- In addition to KOKORO and KOKORO/KISEKI there is a version where both songs are mixed together, both stories told at the same time. As the melodies of the two songs were written to complement each other, the final effect is a complete and harmonious experience.
- There is also a second version of KOKORO and KOKORO/KISEKI mixing together both songs, this time to form a more involved and different take on the story. The first half of the original songs are played seperatly, one after the other. The first is told from Rins point of view, and then Lens. The songs then switch between one and the other and eventually resulting in a cresencdo of both songs finales being played in unison. Nico Broadcast Youtube Broadcast
ココロ・キセキ (KOKORO/KISEKI) / (Heart or Soul/Miracle) KAITO/MEIKO
- This version sung by Kaito and Meiko follows the same story as the original KOKORO and KOKORO/KISEKI, with Kaito taking the role as the scientist and Meiko portraying the robot. Both versions originally existed spereratly but were combined in the same fashion as Rin and Lens versions to form a harmonious melody when played together.
- Artist: Fukusanbutsu-P.
- Artist: Hasurarin.
- Catagory: Hand-drawn
- Producer: ClearTranquil
Original PV: Fukusanbutsu-P
- Here the vocalist adds in dialogue during the intro, instrumental and outro to the original KOKORO as well as singing the song herself.
PV: Broather & Fukusanbutsu-P
- In the same style as Namako's Fandub, dialogue between the robot and scientist are added to flesh out the story.
- The popular dialogue 'Thank you Father' is also added to the end of this song as well.
Vocals: Yamai & Usa
PV: Guraida (Glider) (Nico) / Hasurarin (Youtube)
- Yamai and Usa sing both Kokoro and Kokoro/Kiseki together in one melody.
Vocals: Perróxido & Isaka
PV: Broather & Fukusanbutsu-P
ココロ・アナザー -ラムダオーガン- Episode ZERO【鏡音リン/レン】
- A version sung by Kaito and Rin with Rin taking the role of scientist instead. Just like in the original KOKORO, Rin is trying to install a humanity program into Kaito like how Len tried to do so to her. However, Kaito was initialy a failure, resulting in an accident which left most of Rin's body in sitches. As Rin continues working on Kaito, she realizes that she does not have much time to live and thus, she abandons the Kaito project, but in an act of humanity, dives into the chamber with him to spend her last moments with her own creation.
- There is also some confusion regarding this PV's interpretation. Given that the lines are mostly the same (and Rin still sings the 'Arigatou' part), it is suggested by fans that this version of Rin here is actually the same robot Rin, except that she miraculously survived the KOKORO installation and has thus devoted herself to carrying on Len's work. However, this interpretation has been called into question because of Rin's illness in the PV (a robot is technically immortal and should be immune to diseases).
- A slow, somber take on the original song set to classical instruments.
- Sora takes the original Kokoro to the piano producing a calming melody.
Manga styled PV
Artist: Ema Arihara
- A touching take on the Kokoro story 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.