The origin of Altman's plot
In The Legend of Supergalaxy, the origin of Altman is expressed as that there is a planet, M78, far away from the solar system, where a large group of creatures live. Their appearance is the same as that of human beings, and even their lives are very similar.
One day, however, this M78 star, like the sun, suddenly exploded, and the planet was dark and there was no light. In order to keep the competition going, scientists on M78 star began to study new light sources. Later, after unremitting efforts, they invented the plasma spark tower.