USA has two friends, China and Russia, USA's occupation is a murderer and the other two are serial killers, all three have known each other's identities, so they are much closer. One evening, USA had just finished a mission, he hadn't even wiped the blood on his body, he was sitting on a park bench to rest a bit when he saw two of his friends coming Russia: " oiii ! bro go on a mission without inviting us?" China: "Haven't wiped the blood yet!"