NMIXX, a group under JYP Entertainment, released their first full-length album, "Blue Valentine," three years after their debut. The album was released on October 13, 2025, and the title track "Blue Valentine" ranked first on the Melon Top 100 chart for the first time. The song also took first place on various music shows, continuing NMIXX's rising momentum.

NMIXX showcased the MIXX POP genre and structured the album based on the unique world of "MIXXTOPIA." The story of this album centers around an adventure on the "Blue Valentine Stage." Through songs themed on the ambivalence and conflicts of love, NMIXX portrayed the dilemma of whether to take risks and keep moving forward.

The title track "Blue Valentine" harmonizes an addictive chorus melody with melancholic synth sounds, providing a three-dimensional feel through various BPM changes. NMIXX reached the top spot on Melon for the first time on the afternoon of the 20th and maintained the number one position as of midnight on the 27th. The song also ranked first on other music platforms such as Flo and Bugs.

On music shows, NMIXX won five crowns on MBC M's "Show! Champion," Mnet's "M Countdown," KBS's "Music Bank," MBC's "Show! Music Core," and SBS's "Inkigayo." Popular culture journalist Park Hee-ah praised "Blue Valentine" as a unique song that conveys the emotions of love through music. She explained that the song expresses various emotional changes well and features complex layers.

Music critic Kim Yoon-ha mentioned that "Blue Valentine" successfully combines the freshness characteristic of JYP female idols with elements of MIXX POP. He said this album contributed to highlighting NMIXX's unique character. Music critic Kim Do-heon analyzed that the popularity of "Blue Valentine" is due to NMIXX's narrative and the members' likability.

"Blue Valentine" has a structure that starts with a hip-hop trap beat and transitions to a band sound in the chorus. Critic Kim emphasized that this song left a strong impact on the audience. He added that NMIXX's performance plays an important role in delivering a progressive message to the public.

Through this album, NMIXX is demonstrating both skill and performance, continuing their musical growth. They plan to communicate with fans through challenging music and charm in the future. NMIXX's first full-length album "Blue Valentine" is regarded as an important milestone in their career.