3 years after the events of Re;birth 1 had occurred. This is the story of Leanbox, ruled by Vert, or CPU Green Heart.
"So, Vert, could you teach me how to play those video games you play?" IF asked, smiling as she walked into Vert's room. "Why, of course! Anything for you, Iffy," Vert said, climbing on to her bed. "Just grab a controller and come sit with me!" Vert said, excitment brimming her voice. IF grabbed a controller from the TV stand and headed towards the bed. She sat down and looked at the controller with confused eyes. "So, uh... how does it work?" She asked. Vert looked at IF with a blank stare. "Wait. You mean you've NEVER played a video game before?" Vert asked, her eyes wild with disbelief. "Well uh, if I had played video games before I wouldn't need you to teach me, so.." IF said. She looked scared, as if she was thinking what kind of torture Vert would put her through. "Oh ho, we are going to stay up ALL night playing video games." Vert said. IF faked a smile, but secretly, she wished she had never showed up. But she was going to endure the long, sleepless nights, just for Vert.