On February 6, 2014, the music teaser for "So Wonderful" was released on YouTube through Loen Music's official YouTube account. The song was produced by Super Changddai who worked with the group since their debut.

[Teaser 1] LADIES' CODE(레이디스 코드) _ So Wonderful(쏘 원더풀)
[Teaser 2] LADIES' CODE(레이디스 코드) _ So Wonderful(쏘 원더풀)

On February 12, 2014, the official music video for the song was released and the group performed the new song for the first time on M! Countdown on February 13. The single was released on February 13, 2014.

[MV] LADIES' CODE(레이디스 코드) _ So Wonderful(쏘 원더풀) (Eng Sub)

레이디스코드_ So Wonderful (by LADIES' CODE of M COUNTDOWN / 2014.2.13)
The group performed the new song for the first time on M! Countdown

On July 30, 2014, Ladies' Code revealed a teaser image of their new single, "Kiss Kiss" and released a video teaser on July 31.

[Teaser 1] LADIES' CODE(레이디스 코드) _ KISS KISS(키스 키스)

[Teaser 2] LADIES' CODE(레이디스 코드) _ KISS KISS(키스 키스)

On August 6, 2014, the music video for "Kiss Kiss" was released on Loen Music's official YouTube channel and the single was released on August 7, 2014.

[MV] LADIES' CODE(레이디스 코드) _ KISS KISS(키스 키스)

The sad days for Ladies' Code fans ..... continues

On September 3, 2014, at around 01:20 KST, in South Korea, the group, along with their manager and a stylist, was travelling in a van that crashed into a protective wall in the vicinity of the Singal junction on the Yeongdong Expressway in the direction of Incheon.