[2] On October 11, JYP Entertainment confirmed that Twice planned to release a third Korean album that year on November 5.

A third track list image unveiling additional details about the album was also posted, revealing seven songs in total.

[13] The following day, the group released the second music video teaser for the album's title track, revealing their opening choreography.

[18] Yes or Yes alongside its eponymous lead single was officially released on November 5, with Twice holding their live showcase at the KBS Arena Hall in Hwagok-dong, Gangseo-gu, Seoul.

The title track "Yes or Yes" was composed by David Amber and Andy Love, with Korean lyrics by Sim Eun-jee.

[21] "Say You Love Me" is an upbeat song which lyrically describes the feeling of one who is admitting to their romantic interest and waiting for their reply.

[22][23] Two days before the album's release, Twice appeared on the television show Knowing Bros and performed part of "Yes or Yes" for the first time.

[24] The group held a showcase for the album on November 5, 2018, at the KBS Arena Hall in Gangseo-gu, Seoul.

[2] The group promoted the album on several Korean music show programs, first performing the title track and "BDZ" on M Countdown on November 8.

[37] On November 11, Yes or Yes received a Platinum certification from the Korea Music Content Association (KMCA) for reaching sales of over 250,000 copies.

[40] With the release of Yes or Yes, Twice reached an accumulated number of over 3 million albums sold in South Korea, achieving the feat within three years of their career.