Nu.Clear (stylized as NU.CLEAR) is the fourth Korean extended play by South Korean girl group CLC. The album was set to be released digitally and physically on May 30, 2016 by Cube Entertainment, but the selling of physical copies of the album was pushed to June 3, 2016 to change song arrangements. The album contains six tracks, with member Jang Yeeun participating in three of the tracks for rap making.

The name "Nu.Clear" represents the words "New" and "Clear" (which is taken from CLC's name, CrystaL Clear). It signifies CLC's music transformation as a complete 7-member group, with former Produce 101 contestant, Kwon Eunbin, finally joining them with promotions.

On May 23, Cube Entertainment began uploading group and individual photo teasers for CLC's fourth mini-album Nu.Clear that was scheduled to be released on May 30. From the released images, CLC showed a funky and unique concept with the use of fancy neon colors, highlighting the "sly-dol" image. On May 26, CLC uploaded videos of I.O.I members and Jeon Soyeon (who were also ex-Produce 101 trainees) showing support for CLC's comeback and Kwon Eunbin's official debut.

A music video for "No Oh Oh" was uploaded on May 30. The music video emphasizes vivid colors, as well as the members' visuals showing a sly image with various expressions. The members can also be seen posing on colorful backgrounds, highlighting their fruit characters. Seunghee with green apple, Yujin with strawberry, Seungyeon with orange, Sorn with watermelon, Yeeun with tomato, Elkie with cherry and lastly, Eunbin with lemon character.

The dance choreography for the performance of "No Oh Oh" is choreographed by Yama&Hotchick's Jun Hongbok and Bae Yoonjung. Bae Yoonjung was Kwon Eunbin's dance mentor on Produce 101.

The lead single of the album, "No Oh Oh", was produced by the hit-composers Shinsadong Tiger and Beom & Nang. "No Oh Oh" is a dance number made of simple minor codes and sounds full of twists with a strongly addictive rich-sound chorus. It has a unique pop melody enhanced by main vocalist, Oh Seunghee. The lyrics portray the feeling of a shy girl falling in love.

The tracks "What Planet Are You From?" and "One, Two, Three" are in the new jack swing dance genre. "Day by Day" has a warm country rhythm, that expresses the bashful feeling of a girl falling in love. "Dear My Friend" is a medium-tempo pop song harmonized with acoustic guitar and synth sounds, sending warm and thankful messages to friends. "It's Too Late" is a ballad song, with the elements of rock music, about the story of a girl who sends a message to her loved one that she no longer cares for him.

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Wikipedia