Back to the Mono Kero is the fourth studio album by the Japanese girl band eX-Girl, released by HIBOOM in Japan, Ipecac Recording in the US (IPC-15), 62 TV Records in Belgium, Valve Records in Australia, and Levy-yhtiö in Finland.
The line-up consisted of Chihiro, Kirilo and Fuzuki, and the album was produced by Hoppy Kamiyama.
- "Waving Scientist @ Frog King" (Lyrics: eX-Girl / Music: Hoppy Kamiyama, eX-Girl) – 3:58.
- "Tozka" (Lyrics: Chihiro / Music: Kamiyama, eX-Girl) – 5:05.
- "Aji Fry (Fried Horse Mackerel)" (Lyrics: eX-Girl, Kamiyama / Music: Kamiyama, eX-Girl) – 4:11.
- "Pop Muzik" (Lyrics & Music: Robin Scott) – 4:51.
- "Gween-Kong-Zee" (Lyrics: Kirilo / Music: Kamiyama, eX-Girl) – 4:57.
- "Cucumber Surrender" (Lyrics: Kirilo / Music: Kamiyama, eX-Girl) – 5:47.
- "Wipe Out #3" (Music: Kamiyama) – 2:12.
- "Solid States Kerok'n'Roll" (Lyrics: eX-Girl / Music: Kamiyama, eX-Girl) – 4:22.
- "Zero Gravity" (Lyrics: Fuzuki / Music: Kamiyama, eX-Girl) – 4:35.
- "Crime of the Century" (Music: Kamiyama, eX-Girl) – 9:46.
- "Sasuke" (Lyrics: Kirilo, Kamiyama / Music: Kamiyama, eX-Girl) – 5:25.
- "Let My Name Be Swallow" – track 12 (Japanese release).
- "Swanky*Spunky*Slinky" – track 12 (Belgian release).
- Chihiro – vocals, guitar, sitar.
- Kirilo – vocals, bass, Casiotone.
- Fuzuki – vocals, drums, percussion.
- Steve Eto – tom-tom (M-6).
- Hoppy Kamiyama – Digital President, asshole box, scum tape from garbage, Slide Geisha, metal, gram pot.