The album debuted at the sixth place of the Oricon daily charts, making this album one of the most successful in Kotoko's musical career.

Overall, Epsilon no Fune is Kotoko's fourth best-selling album according to Oricon.

The DVD contains the PV and making for ε: Epsilon.

Also, the album contained a special CD which contains a 2009 remix and the original version of her song Hitorigoto (ひとりごと, Soliloquy).

All lyrics are written by Kotoko, except "Little Baby Nothing" by James Dean Bradfield, Richard Edwards, Nicholas Allen Jones and Sean Moore This article about a Japanese album is a stub.