The EP featuring genres from EDM, hip hop, synth-pop and '90s music, all members of Twice participated in the album as songwriters.

The tracklist for their upcoming album was also posted, revealing the credits for the title track "Feel Special" and for the Korean version of Twice's Japanese single "Breakthrough".

[23] The EP was officially released on the same day, with the group holding a press conference at the Yes24 Live Hall in Gwangjang-dong, Seoul.

[24] Feel Special is an extended play consisting of seven tracks featuring genres from EDM, hip hop and 90s music.

The eponymous title track is described as a party-pop song featuring the usage of synth music, written and composed by J. Y.

"Trick It" features a "sweet, delicate" melody coupled with a disco beat, written by member Dahyun with the song depicting on how one tells white lies for the happiness of a certain person.

The closing track, "Breakthrough", is Korean version of the group's fifth Japanese single from their album, &Twice, that heavily features brass music.

Additionally, when the group held their first promotional showcase for Feel Special at the Yes24 Live Hall in Gwangjang-dong, Jihyo performed without doing the choreography, with JYP Entertainment stating that she was receiving medical treatment for a minor neck injury.

[33] Members Nayeon, Jihyo, and Chaeyoung appeared as guests on the tvN television program Amazing Saturday-DoReMi Market on September 28.

[34] Writing for Sound Digest, Amanda Lee noted that Feel Special is an "exceptional comeback" following Twice's increased international presence after the release of Fancy You, stating that the tracks from the group's latest album "[is a] pop perfection and showcases the girls’ increasing presence in crafting timely songs that are relatable and catchy.

[39] In a mixed review, Kim Do-heon of IZM gave the album a rating of 2.5 over 5 points, praising the overall production, but stated that Feel Special is "not a sufficient basis for the transition to [more] mature and refined concepts.

Their previous EP release, Fancy You, initially held the record for highest first-week sales volume for a Korean girl group with 151,000 copies sold.

[46] On October 29, Gaon confirmed that Feel Special had reached 400,000 copies sold in shipments, becoming Twice's best-selling album until it was surpassed by their succeeding EP release, More & More, in 2020.