This week in Osaka, 23 year-old Eriko Tashiro and her boyfriend Daigorou Umezaki, 31, were sentenced to prison for 13 and 14 years respectively. In September 2010, both savagely beat Eriko's younger sister, Yuriko, to death.
The two regularly bullied and abused Yuriko. Both Eriko and Tashiro were on welfare; but, Yuriko had to get a part-time job to cover entertainment expenses, like getting a game console (news reports don't specify which).
On the day 17 year-old Yuriko was murdered at their home, her older sister and Tashiro became incensed after Yuriko didn't practice playing video games -- she skipped her practice session, apparently. Other things that made them mad was that she didn't take out the rubbish. They beat Yuriko with brass knuckles, their fists and a chair until she died.
A jury of their peers -- a relatively new addition to the Japanese legal system, judged the two. The jury system was reintroduced (it existed before World War II) in hopes of making rulings fairer.