The song is the thirteenth track on the album, and was written by Lao Ra, Guaynaa, Tinashé Fazakerley and Vincenzo and produced by him and Fuxxy.

Lyrically, the song tell a story of a confused love that causes great sadness due to the lack of interest from a lover.

[1] 88rising and Chung Ha worked with a lot of different Latin producers on it and stated "that this is not even reggaetón, rather like a different genre of older, classical pop music.

[4] "Demente" is a Latin-pop and pop song with reggaeton rhythms, aided by Puerto Rican rapper Guaynaa.

[4][2][5] It was written by Lao Ra, Guaynaa, Tinashé Fazakerley, Laura Carvajalino Avilaand, Vincenzo and produced by him and Fuxxy.

[7] The song marks the first Latin and K-pop collaboration for a female Korean soloist and "highlights Chung Ha's refusal to be pinned down or limited by boundaries – either geographical or genre – meshing Korean, Spanish and the dancehall-derived beats into an infectious, vibrant cut".

[5] Lyrically, the song tell a story of a confused love that causes great sadness due to the lack of interest of the other person.