Yamaguchi-gumi’s numbers dropped from about 20,000 at its peak with recent defections further reducing its mafia clout.
Mystery surrounds responsibility for ‘inappropriate accounting’ after months of investigation into $1.9bn loss cover-up.
While other US allies reacted angrily, Japan’s response to WikiLeaks’ NSA espionage allegations was muted.
The 70th anniversary of the A-bomb attacks troubled by rising military tensions for Japan and its regional neighbours.
Free speech debate rages with some saying outlawing hate-filled protests will only hide the haters.
Research indicates chewing food properly plays a role in brain stimulation, blood circulation and mental health.
Amid a decline in power company profits and rising consumer energy bills, Tokyo eyes a nuclear plant revival.
With polls predicting an easy win for PM Abe and his party, some view Sunday’s vote as a move to solidify power.
Japanese government says nuclear energy is still needed, but environmentalists are wary of another Fukushima.
Japanese engineers face mammoth task of dealing with contaminated water from the nuclear plant disaster.