Restaurant owner Koshiba and his brother-in-law -- Paul Yang, the CEO of Delta Capital, a real estate development company -- will watch the political leadership with a wary eye.

CNN: Will `Abenomics' lift Japan from recession?

The system was introduced after last year's Olympics when America's Paul Hamm was awarded the all-round title after South Korea's Yang Tae-young was incorrectly docked a 10th of a point from his parallel bars routine.

BBC: World Gymnastics highlights