Kuroki Yuichi is a criminal and serial killer mainly responsible for the Starbucks Massacre, where he murdered 3 employees and the boss, totaling 4 victims with stab wounds to the carotid artery. But soon after, he went on a rampage and killed 20 drug dealers in several alleys with gunshots: both crimes recorded by security cameras and which happened on the same day (05/18/2024.) After the crimes, he wrote on a huge sheet of notebook that he was a normal guy who became crazy after being despised by people and receiving minimum wage. Kuroki is also responsible for beheading a man inside a hospital who had relationships with married women.