As they fled the building, the sounds of battle filled the air. Six months of continual practice in dealing with Onis was letting the two of them actually hold them back!

About twenty seconds after the last of the escapees left the building, there was a rumbling noise, then suddenly an enormous sword blade erupted through the roof in a cloud of dust, accompanied by a barrage of energy blasts of the sort that Supernova is known to use.

After that, all was silent.