Masaaki Shirami

Masaaki Shirami (白身 正亜希, Shirami Masaaki) is a serial arsonist killed by Light as a part of an experiment. Light writes Shirami's name into the Death Note to test its effects. Light writes that Shirami would draw a pentagram inside a circle and then die. At 6:00 PM on December 19, Shirami cuts his finger, draws a circle and a pentagram in his cell with his blood, and then dies.