After his release , he raped and murdered a woman and her sister in 2005 .
Yukio Yamaji , a 16 - year - old living in Japan , killed his mother in 2000 .
After Yukio Yamaji 's release , Yukio Yamaji raped and murdered a woman and mother 's sister in 2005 .
Yukio Yamaji , a 16 - year - old living in Japan , killed his mother in 2000 .