Evacuate from the 21st Century

Overview:

On Planet K, unknown to anyone on Earth, three teenagers chosen by fate can travel back and forth twenty years into the future by sneezing. In the face of a shocking plot to destroy the world, they have nothing but crystal-clear stupidity and single-digit combat power, so how can they transform into heroes and fight against the super-villainous villains who are intent on destroying the world? The "King Bomb" brothers, who look like grown-ups but have minds like no other, will save the future on behalf of the K-Star!