The group said the system did not allow for sentences to match individual crimes.
By allowing for sentence review after years have passed, we give juveniles something to hope for.
It would allow for sentence reduction and alternatives to prison, and let prosecutors focus on those found "most responsible" for atrocities and to concentrate their efforts on the most serious and representative crimes.
He became an advocate of repealing the three-strikes law, which allows for life sentences on a third conviction, appearing at events and on the "The Montel Williams Show" and saying he feared being thrown in prison for good.
While it allows for jail sentences, customers have received only fines so far.
But gaps remain in a legal system that allows for lenient sentencing in child abuse cases, particularly in cases involving family.
The new law allows for a sentence of up to 20 years in jail for throwing a rock at a vehicle with the intent of causing bodily harm and 10 years in prison if intent was not proven.
"There are 32 articles in the penal code regarding publishing crimes, 22 of which allow for jail sentences for journalists," he said.
The opposition Democratic Party of Japan wants to add 30,000 police officers over the next four years, and allow for life sentences without parole.
Anti-rape activists are pushing for more legal reform: an amendment of the sexual-offenses act to allow for heavier sentences, and the introduction of hate-crimes legislation, which would address corrective rape.
