The Most Beautiful Moment in Life, Part 2 (Hangul: 화양연화 pt.2; Hanja: 花樣年華 pt.2; MR: HwaYangYeonHwa pt.2) is the fourth extended play by South Korean boy band, BTS. The album was released on November 30, 2015 by Big Hit Entertainment. It contains nine tracks, with “RUN” as its lead single.
On September 8, 2015, Big Hit Entertainment released the “화양연화 on stage : prologue” video on Naver V LIVE, announcing their upcoming comeback and concert tour, 2015 BTS LIVE <The Most Beautiful Moment in Life On Stage>.
The prologue video included previews of the album tracks “Butterfly", “Ma City", and “Outro: House of Cards". In the video, it was indicated that the album release was originally scheduled for October; the release, however, was ultimately delayed to November 30.
On November 17, an animated comeback trailer was uploaded on Big Hit Entertainment's YouTube channel, which featured the album track “Intro: Never Mind” performed by Suga, RM, and J-Hope. On November 19 and 20, short clips of each BTS member were uploaded onto their official Instagram account, with clues hinting at an upcoming event related to the album release. Subsequently, on November 20, Big Hit Entertainment announced the ‘Butterfly Dream: BTS Open Media Exhibition’ event, which was later hosted on December 1–8 in Seoul.
On November 23, BTS released the first set of album concept photos through their official Facebook and Instagram accounts, accompanied with the caption: “Je Ne Regrette Rien”, which means “I regret nothing” in French. On November 24, a second set of concept photos was revealed with the caption: “Papillon”, which translates to “butterfly.” The album would be available in two cover design versions, Peach and Blue. Both versions would include a 98-page photobook, a random photocard, and one limited edition poster. On November 24, special bonus concept photos were released through Naver Music.
On November 25, a music video teaser for the album's lead single, “RUN”, was released through Big Hit Entertainment's official YouTube channel. On November 26, the album track list, containing nine songs, was shared on the group's official Twitter account, and the album preview was uploaded on YouTube. Additionally, short clips of behind the scenes footage from the “RUN” music video was uploaded on the group's Instagram. On November 27, BTS released a track from the album, “Ma City”, on their official homepage for free pre-streaming, available for a limited period of 24 hours. At the press conference for their concert held the same day, BTS stated: “Part one explained how youth is tiring and difficult, and it also touched on how we feel like we're always on edge. Part two will have a more adventurous and daring feel to it. That's why our title song is ‘RUN’."
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