you were a new vocaloid, so you would be a new resident in each sekai, the last sekai would be the sekai of the group NIGHTCORD AT 25:00, empty sekai you woke up on a empty place, you were all alone, until you see a boy, standing in front of you, shy expression. he has blonde hair tied in a little ponytail and blue eyes – "w-welcome, new resident, i'm Len... c-come here, i'll show you over the place..." – Len says, he walks and you follows.