Japanese cartoon about nuclear plant problems

Japanese cartoons targetted on kids to explain what is happening in the fukushima nuclear power plant. I really like how they did it as simple to understand as possible without injecting lies and such. Nuclear power plant changed to nuclear boy and the radiation leaks as flatulences and poo. Well this is really a good idea. When a lot of people talked about an impending doom, kids who doesn't understand that much in the world may feel panic and stress.

But on the side note: why is his face square?(maybe because the power plant is also square.)
And why did i suddenly remember ultra man when the narrator said: "we will do everything in our power to prevent it"