It has been 5 months since Alex came inside of the world tower. For 5 months he stayed in the world tower while the clone Alex stayed on the Earth.
Those already appeared on earth many times but fortunately clone Alex did not need to take action. Those fighters present on the earth are able to handle all the matter.
On the other hand, Alex already visited from the 6th floor to the 10th floor. He had to say that at this time he did not see any type of world gate that he needed to cross to go to the 7th floor or 10th floor.
You could directly go to the next floor without any problem and with that anyone could travel around this four floor.
While visiting all those floors Alex did not reveal his identity to anyone and because of this nobody was able to guess that the person present in the territory was the only explosion while the main Alex was visiting all the floors.