Bioshock au. Sehun has never been able to leave his tower and Zitao is trapped thousands of feet below. Meeting would seem impossible but they managed anyway.  ForewordOn one side of the tear; water. On the other side; air.    Ive been meaning to do this for a while actually and finally got round to it. I dont know whether Ill do spin offs but its a possibility because Rapture and Columbia are big places.