You punch a hole at one end of the egg with an egg-piercing needle. Then you put it in a plastic chicken with metal lining of some sort. It microwaves for 3 minutes 12 seconds, and you get perfect soft "boiled" egg. But you have to go to Japan to get the special chicken :)
@jyokota When I go through customs and they ask me why I'm visiting Japan, I'll tell them about needing the plastic chicken to boil eggs in the microwave haha.