Rayet, codenamed Scuro, works as an assassin for the infamous group Scarlet. His sole job is to assassinate other assassins as part of the "clean up team".<br /><br />Sick of taking lives, Rayet attempts to leave Scarlet. With the help of a fortune teller named Junki and his assistant Ritsuna, Rayet may succeed. However, Scarlet's rules do not contain a way to let him leave alive.