Megurine Luka: Friend and fellow virtual singer. Minori explains that the "setting" of their relationship changes with the song. As with most other virtual singer related media, his relationship with Rin is not clearly defined in the story. Kagamine Rin: Vocal twin and fellow virtual singer. In the Street Sekai, his relationship with Miku mirrors that of an older sibling younger sibling pair, as Miku has a tendency of treating him like a child, much to his chagrin. Hatsune Miku: Friend and fellow virtual singer. He wears a black choker and three gold stars on his lapel. He wears a spiked black blazer with a yellow checkered pattern, with an orange hoodie, white button-up shirt, and magenta tie underneath. He also wears cuffed knee length shorts with a diamond shaped pattern, joining the shorts trend set by his original Virtual Singer outfit. To emphasize his status as the “Prince of the Stage”, his outfit incorporates Epaulettes and a small, elegant hat that he wears on the side of his head. His idol outfit is primarily yellow, his character color. In the middle of his bowtie is a blue jewel. His outfit also employs many star patterns, such as on the side of his pants or as buttons on his waistcoat. On the bottom, he wears knee-length harem pants, striped stockings, and lace-up boots. He wears an orange and green outfit resembling a ring master, with a tailcoat, striped waistcoat, and bowtie and cravat. He wears brownish-gray cargo shorts (they aren't quite long enough to be pants) and brown boots.
![len vocaloid len vocaloid](https://artfiles.alphacoders.com/122/122727.jpg)
He also wears a gray hoodie-like jacket - which would be suitable winter wear if it had sleeves. In addition, he wears a white button-up shirt and a navy blue vest with medium-length sleeves over the button-up. Like his standard Virtual Singer attire, in this sekai Len has white headphones with a small microphone attached. Len's outfit is very similar to Kagamine Rin, with some differences being the tie and longer, loose shorts.
![len vocaloid len vocaloid](https://artfiles.alphacoders.com/122/122876.jpg)
He has blue eyes and short yellow hair, tied up in a ponytail.
![len vocaloid len vocaloid](https://m.media-amazon.com/images/I/41L8HCPDFbL._AC_.jpg)
Len's appearance and looks are modeled after his V2 design. In Vivid BAD SQUAD's Sekai, he is a DJ together with Hatsune Miku and MEIKO helping run MEIKO's street café. Len appears in the real world as a virtual singer, but when young people have trouble understanding their true feelings, Len and his fellow virtual singers appear in another world called Sekai to help them.