According to website PSU, Team Ninja producer Yosuke Hayashi said the DOA5 development team went "hands on" with partners and other studio staff to get the game's breast physics "right".
Oh. Yep, once again, Team Ninja proves the amounts of fucks they don't give is the stuff of legends.
But DOA5 is more than just jubblies. "DOA5 is a fighting game for this generation," said the producer, adding, "Our game engine is built from scratch." And, apparently, it's built from groping, too.