What is this manga that has a guy with the power to make a transparent round bubble?
The manga you're looking for is named Tanabata no Kumi. You're not mixing any mangas together, all what you've said is in that one.

Here is the synopsis:


  Basically, some humans have the ability to negate a sphere of reality, neatly removing it from existence. This gradually alters their appearance until they become a hideous alien, with a giant eye in their forehead.