

Their codename "CV02" means "Character Voice 02". This refers to an " echo", which is a sound being bounced back to the user from a different direction caused by soundwaves hitting a surface at a direction that reflects it back the way it came. Their surname was derived from the developing code combining Kagami (鏡, mirror) and Ne (音, sound). She later confirmed in an interview after the Append release that the names were based on Ken and Rin from Hokuto no Ken, derived from a discussion about names that were familiar from her childhood. Their given names of Rin and Len were said to be based on " right" and " left" according to Asami Shimoda. When the Kagamines were being recorded in 2007, their names were not yet decided. Wat also said that the Append boxart makes the pair seem like twins, due to the foetal position they were in. Wat) described them as two bodies with one soul. During their Append's production, Wataru Sasaki (aka. Crypton's final announcement was that the Kagamines were neither siblings nor lovers. Crypton stated that they approved of the many different interpretations of Rin and Len's relationship that they saw in different works. Ĭrypton originally had the intention of distributing them as twins, but this was not adopted.

The first idea was for two voices of a girl and an identical male of the opposite gender, just like twins. The development of the Kagamines began when Crypton formulated the concept of making a pair of female and male voicebanks.
