User blog comment:Akrie/November 27th Events & Updates~!/@comment-113.210.8.207-20151127161456/@comment-26044650-20151129154637

It only seems that way because they removed your friend's scores during gameplay and left that gap there. The Energy amount is still the same.

It may have been an accident or a bug, or they're planning on allowing us to upgrade the Energy Boost further.