Race: Elf Class: Assassin Subclass: Hunter Guild: Silver Sword Name: Nakayama Masashi Age: 16 Birthday: July 27, 2002 Occupation: High School Student William Massachusetts, also known as Eyes of Mystery William, is the guild master of Silver Sword guild. He was invited to be a member of the Round Table Alliance but declined, stating that its goals had nothing to do with him and his guild. (Source: Log Horizon Wikia)