Apple will be committing upwards of $2.2 billion in order to take over two whole floors of the 54-story Mori Tower as it relocates its Apple Japan headquarters from one part of the capital city to another. Mori Tower is the centerpiece of Roppongi Hills, a high-end business property development, reports Bloomberg. Apple Japan is presently located in Tokyo Opera City Tower and plans to complete the move before the beginning of summer. One reason for the move could be related to the real estate market: office rentals are down to less than half of what they fetched at their peak, about five years