By being dumped into garbage dump, the past records of the robot- Debris Kun (memory) has disappeared into stardust (stardust). Due to a chance encounter, the pretty high school girl Nina picked him up stating she would not be a robot master but a teacher. They lived together. This world is full of wonders: giant snakehead fishes fall from space, toy monkeys start conversations, a ¥ 300 million lottery hit is won, and special motors make islands fly! "After one year, five years later, 10 years later...and 50 years later..." Every time you go through one volume, time is progressing very quickly in this work. Robot does not grow old, but human beings do. The girls grow into adult women, the surrounding environment also evolves into a more SF view of the world. Human beings are dying, but the stardust memory of the robot does not die. This manga might give to readers the feeling of being watched in the transience of the world, likely from God's point of view. And so the story, in God's speed, proceeds to the future. "Boys and Girls", following