Kodoku no Bannin is an original song by SCL Project featuring MAYU. It is a rock song about a girl(MAYU), who is overwhelmed by the feeling of loneliness and is driven to obsession with a person. This song is featured in natsuP's album, GOTTANI! and the EXIT TUNES compilation EXIT TUNES PRESENTS VOCALOID™3 Library MAYU SPECIAL 2CD.