[5] She is also widely known in South Korea as her nickname "national fairy" due to her petite body and powerful singing voice.

On June 6, of the same year, she released a repackaged edition to include another title track, "Flood of tears" (눈물이 주룩주룩).

Shortly after, on June 19, 2012, her album Parallax was released with the title track, "Sorry" (Korean: 미안해), being a remake of the Spanish language song Mientes by Mexican pop band Camila.

In 2013 she released the cover of Atlantis Girl (아틀란티스 소녀), originally sung by BoA, for hwangseongje project superhero 1st Line up, the O.S.T My Everything for the variety show We Got Married and the O.S.T.

In December, Park officially signed a management contract with LOEN Entertainment (now kakao M)'s indie sub-label "Mun Hwa In".

In December 21, Lena Park has been confirmed to join to Begin Again 2, the second season of a reality program where famous musicians from South Korea travel overseas to sing.

During December 22–25 she has held her solo winter concert, named "Let It Snow" as the last year, at the SK Olympic Handball Stadium.

During the first months of 2018, she recorded for the reality show Begin Again 2 while on February 27 she sang for the 10th anniversary of the death of composer Lee Young-hoon.

In the program she could sing some of her hits like 꿈에 (In Dreams), 달아요 (Sweet) and You Mean Everything To Me, duetting very often with the member of her team, in particular with Lee Su-hyun of Akdong Musician.

After (비긴어게인 2), on June 19 she released the single The Wonder 1st DS with 같은 우산 (Same Umbrella) as title track and starts The Wonder Tour during the summer.

In April her return for the third season of Begin Again (비긴어게인3) is announced and she will be part of the same team with Henry, Su-Hyun, Harim and the new members Lim Heon and Kim Feel.

In May she was selected by Disney Korea to promote Aladdin with John Park (존박) and on May 13 their Korean pop version of A Whole New World (아름다운 세상; arumdaun sesang) was released.