Kagamine Len

Kagamine Len (鏡音レン), codenamed CV02, is a Japanese virtual singer developed and distributed by Crypton Future Media, Inc., and was initially released in December 27th, 2007 for the VOCALOID2 engine by YAMAHA. He is the male counterpart to Kagamine Rin, who also debuted alongside him on the same date.

Kagamine Len's relationship with Kagamine Rin remains ambiguous. Some have theorized they may be siblings, others see them as lovers, but deep down, it's safer to assume they're two virtual singers that are held together by one soul, considering how they were marketed to sell alongside each other. Not even Len himself knows the answer to their relationship, but one thing's certain: they care about each other a lot.

For his appearance, he has blue eyes and short, yellow hair tied back in a ponytail and spiked, designed in a way reminiscent of a "bunch of bananas". His body type is slim and smooth. Len measures 156cm for his height and weighs 47kg. For Len's outfit, his top consists of a white short-sleeved sailor uniform with black trim on the sleeves. A golden-yellow tie is neatly tucked into the shirt, alongside a yellow metallic plate attached to its left chest part. His arms feature detachable black sleeves featuring rectangle shaped blue prints. For his bottoms, he wears black shorts with yellow trim and matching belt loops. His legwear consists of black leg coverings that extend from the knees downward, trimmed with yellow at the top and bottom edges. For his footwear, he uses white boots with yellow soles.

Virtual Singers are a viable alternative to producers that can't afford to hire actual human singers, having many songs being composed using their voices through a wide variety of genres, colloquially referred to as "Vocaloid Music", named after "VOCALOID", the software Kagamine Len originated from. Ever since Crypton Future Media's partnership with YAMAHA ended after the release of "VOCALOID 6", Kagamine Len and the rest of the virtual singers created by Crypton were bundled together within "Piapro Studio", another vocal synth program that works the same as any other of its type.

Virtual Singers follow instructions from their producers during the creation of a song's vocal part, allowing for their voices to modulate and change depending on the producer's specifications. Their voicebank parameters are easily accessible and modifiable, thanks to their versatility. They aim for the best result as possible despite their limitations, finding joy in getting a producer's vision come true no matter how long it may take.

Like any virtual singer, Kagamine Len is well-versed in music theory, and his vocal range is flexible and strong, despite his boyish accent. His vocal range varies from increasingly tense, moody with a high pitch focus, emotional and strong, though somewhat artificial due to the fact that he's a virtual singer himself.