Nobita's father is old fashioned, so Nobita uses Doraemon's ray gun to make things as they would have been in the past or future, then starts on living things with a mouse de-evolutionized 200,000,000 years to become a large dinosaur and his father evolved into a future man.
Please solve the math problem below to unlock download mirrors for Doraemon.
Links are proxied and may take a moment to start.