While working at his job in a factory, Sakuya Ishikawa receives a phone call from his mother Akiko, who lives with him. She tells him that she wants to talk to him about something important when he gets home. On his way home from work, Sakuya sees Akiko standing by the river, which is flooded by heavy rain. Sakuya rushes to save his mother, but he is seriously injured. A year later, he wakes up from his coma. He learns that his mother died and it was her choice to do so. He is devastated by the loss of his only family member. Also, due to the wave of robotization, the factory where Sakuya worked is now shut down. He is confused by the drastic change in the world. He is introduced to a technology job by his childhood friend Kishitani and he begins to work on behalf of clients as a real life avatar. Because he is unable to get over his mother's death, he turns to developer Masato Nozaki and asks him to create his mother using VF (virtual figure) technology.
