Lethality is the third extended play by South Korean singer Kwon Eun-bi.

The album consists of six songs including the lead single, "Underwater".

On September 20, with a poster, Kwon announced her comeback with her third mini album, Lethality, which was released on October 12, around six months after her second EP, Color.

[4][5] The track list was released on October 3.

The third and fourth concept photo were released on October 5 and 7 respectively.