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Characters / Vocaloid Kagamine Rin And Len

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Rin and Len's v4 design

Kagamine Rin and Len are Japanese virtual singers (vocaloids) developed by and distributed by Crypton Future Media, Inc. Unlike most vocaloids, Rin and Len come together as a package, and is not sold separately.

Their voices are provided by the Japanese voice actress, stage actress, and singer Asami Shimoda (下田麻美 Shimoda Asami).

Despite having the same voice actress, Rin and Len are not officially twins. This was decided after seeing many interpretations of their relationship across various songs and works. Crypton's final announcement was that they were neither siblings nor lovers. During production of their Append voicebank, Wataru Sasaki described them as two bodies with one soul. This ambiguous relationship is the start of many tropes that would be used in their songs. Even so, unless described otherwise, people usually assume that they have a sibling relationship.


Associated Tropes:

  • Angsty Surviving Twin: whenever one of them dies you can expect this trope used
    • 狐花 (aka Fox Flower or Lycoris): sometime after Len was killed, a hateful Rin poisons the entire village and herself upon finding out that the villagers would kill the 'demon child'.Its prequel, 六花 (aka Snow Flower) has some extent of it as Len, as the village guardian deity or the 'demon child' grieves for Rin.
    • Regret Message: After Rillane (Rin) caused Allen (Len) to be executed, she goes to the sea and sings about her regret and grief
    • sigh (iroha): Rin remembers why she has been sighing so much
    • Soundless Voice: Len goes into shock after Rin collapses in the snow

  • Cain and Abel:
    • Glorious Score and Downfall Score: They receive a prophecy and after various circumstances Rin decides to be an 'evil' witch so Len can fulfill his 'destiny'

  • Coordinated Clothes: goes for all of their official designs (v2, append and v4). Yellow is their main colour while black and white are their sub-colours. Subsequent designs with Append and v4 has Rin with more white and Len with more black. There's also various songs that use this.
    • Revolution (下克上): both wear yellow-orange robes and are both warrior-like

  • Creepy Twins: you can expect this if they both sing in a song about Halloween
    • Black Cats of Eve: Two cat demons play in the town before setting it on fire
    • さあ、どっち?(aka Now, Which? or Now, Choose): Rin and Len asks you to entertain them with either trick or treat
    • Trick or Treat: the two of them invite Miku into their mansion and would kill her later

  • Famous Last Words:
    • Daughter of Evil: "Oh, it's tea time"

  • Fearful Symmetry:
    • Somehow Rin and Len have a bit of trouble finishing rock paper scissors matches. This can be found in Whatever Whatever Whatever and tettey-terettey. Although it seems Len tends to get the upper hand in these.
    • In Childish War, the two would fight for the right to rule. Rin wins first, then Len wins, but they draw in the end.

  • Finishing Each Other's Sentences:
    • 進化する三人: in this talkloid, Rin and Len would divide a sentence and say each character in their new Append voicebanks

  • Foolish Sibling, Responsible Sibling:
    • In Childish War, Rin is described as bratty and assertive, while Len sticks to the rules and is prudent

  • Half-Identical Twins: Rin and Len have this relationship unless implied otherwise

  • One Twin Must Die:
    • 狐花 (aka Fox Flower or Lycoris): Len gets executed for a superstition that twins are cursed.

  • Playing Their Own Twin: both are voiced by the same person Asami Shimoda

  • Separated at Birth:
    • Synchroncity series: Rin was taken to be the Dragon's songstress, and Len would later look for Rin after experiencing some Twin Telepathy

  • Together in Death:
    • Prisoner and Paper Plane: After Rin said goodbye, Len got into trouble and is gassed, while Rin died of the sickness that prompted her to leave in the first place. The last scene of the song was them meeting at the field, now without the fence
    • Second Life: Len would later realise at the last day that he has been using Rin's body for his extra time, and that both of them had already died and were together all this while. The last shot of the song is a memory of their birthday.

  • Trickster Twins: in various media such as fan-made comics they can be found being playful or mischievous

  • Twin Switch:
    • most notably Servant of Evil, when Allen (Len) disguises as Rillane (Rin) to take her place as the princess

  • We Used to Be Friends:
    • Mistletoe -Tree of Reincarnation-: Rin and Len stumbled across each other and made friends, that is, until an assassin killed Kaito

  • Yandere:
    • Rillane (Rin) in Daughter of Evil. Unable to figure out which green-haired woman her fiancee dumped her for, she orders her army to invade their country and slaughter them all.
    • True Love Restraint: Len kills all the other vocaloids because Rin was looking at them, and later chokes Rin afterward

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