From June 8, 2011, the group went to stay in Japan for 3 months to prepare for their official Japanese debut by which they are eyeing to set themselves on the Oricon Chart, but it wasn't too long before the group finally released their first Japanese single, "Tick Tack". The group is already gearing up to release new single album on February 29 entitled "Forbidden Love". After having prepared for their next Japanese releases, it was revealed through the group's official Japanese website that U-Kiss is set to release not only their second Japanese single, but also their first full length album A Shared Dream. The group started recording since December 2011 for the album. The album is going to be released in 3 different editions as CD+DVD, Regular edition and a mu-mo special edition. The CD only release has an extra bonus track called "Tick Tack -MARCAN Mix-", while the DVD version comes with additional footage of behind-the-scenes filming, as well as the music videos for their earlier released singles.
The album has a total of twelve tracks which were mostly composed and recorded in high quality facilities in Japan. The first single, "A Shared Dream" (not to be confused with the album title as they are the same) was expected to be released on Valentines Day, together with another single "Forbidden Love" which can be found also in the album, but will be released as a separate single album. However, A Shared Dream was revealed on the internet on February 16, 2012. It is a heavy ballad, mixed with English lyrics and traditional Korean-like rapping which is dominantly incorporated with piano. The single, "Forbidden Love" is a continuation to their heavy-metal era like "Man Man Ha Ni" (2008), "Bingeul Bingeul" (2010) and "Shut Up!" (2010). It contains slick vocals and an enormous rap that jives with the heavy rock theme of the instruments. Most of the tracks from the album are R&B musics. Among them are "Orion", "Show Me Your Smile", "Believe" and "The Sound of Magic".
According to Asia-based website, Asian Addicts Anonymous, the single A Shared Dream is a pleasant-to-hear track. It further stated that the Japanese ballad does not sound awkward like other Korean groups who do also Japanese songs. He also added, "I[Asian Addicts Anonymous] do have to say that Dongho’s and Eli’s rapping[...]sounded rather awkward and those two are generally fairly decent in the rap department[...] AJ’s rapping seemed a step above the other twos, but still not as great as it usually is in either English or Korean...". He also praised the music video for being too classy, and notice how the angel's wings and the M. C. Escherstairs added the relaxing aura.
The group held a fanmeeting event with 2,000 fans to celebrate the release of their albums and the very first performance of Forbidden Love. It was also performed on the March 16th episode of NTV‘s Happy Music. After the commercial success of the album, U-KISS had their guesting, in-line with the promotion of the album to different radio stations such as Skip Beat, KPOP Street and Area Cross of Northwave FM, Now & Next and Groove of Air-G FM and in STV Radio. Aside from Radio promotions, the group also graced the Japanese television appearing on shows like DJ and Play Saturday of TVh. There will also be a premium event that includes album signing and meet-and-greet with the fans on April 2, 2012 in Nagoya, Japan.
The album debuted at No. 6 in the daily edition of the Oricon Chart being the album with the highest entry in the Top 50. On March 1, 2012, the album jumped to No. 2 in the daily chart. However, on March 2, 2012 the album dropped in No. 11 in the daily album chart. The album also debuts atop the K-Pop Album Chart of Tower Records from February 29, 2012 to March 4, 2012.