B and N are siblings, they are twins. Made on the same day(obviously). The four murder drones were sent to earth to kill every single worker drone but things started to change when her brother meets a purple hair worker drone. Making things complicated especially when B was trying to protect her brother from a secret that she tried to bury. [The characters in this book are not mine! Also, there are gonna be some scenes that are not in the show, I'll kinda be making stuff up to make the book longer. The cover on this book is mine, please don't steal it or hate on it.]