Song lyrics serve not only as a medium for artistic expression but also as a sign system that represents the poet's psychological and social experiences. One of the dominant themes in Mafumafu's album, Kagurairo Artifact, is self-destruction, manifested through the use of metaphor. This study aims to describe the representation of self-destruction through metaphor in Mafumafu's song lyrics on the album, Kagurairo Artifact, using Barthes's semiotic approach. This research is a qualitative descriptive study, using song lyrics from the album, Kagurairo Artifact, as its data source. Data were collected using listening and note-taking techniques, then analyzed through the stages of data reduction, data presentation, and drawing conclusions. The analysis was conducted based on Barthes's two levels of meaning: denotation and connotation, which were then interpreted as myths. The results of the study show that the metaphors in the song lyrics represent self-destruction through various forms of identity disintegration, including the collapse of hope and identity, the search for identity that ends in illusion, the severing of affective bonds, the loss of social relationships, the loss of life orientation, the absurdity of existence, self-erasure, the internalization of feelings of worthlessness, the failure to build attachments, and the rejection of affection as a self-protection mechanism. All of these signs form the myth that human identity is a construct dependent on relationships, experiences, and sign systems. When the relationship between signifier and signified collapses, the individual remains biologically present but loses the meaning that defines him or herself, thus experiencing self-destruction.