Lim debuted as the lead singer
Cube Entertainment's boy group BtoB on March 21, 2012, with the promotional single "Insane". The group has released a total of 3 studio albums and 10 extended plays since debut. In September 2016, Lim became part of BtoB's first unit group, BtoB Blue, which released the digital single "Stand By Me" on September 19, 2016. On August 2, 2018, BtoB Blue released their second digital single, "When It Rains". In October 2019, Lim released an
EP.
Rendez-vous is the first solo album released by Lim in seven years since his debut. He participated in writing, composing, and arranging all the songs in the album. Following his solo debut, he held his first solo concert
Rendez-vous at Bluesquare iMarket Hall on November 2 and 3, 2019 which was sold out in four minutes. On November 19, he prepared a surprised busking event for his fans with an attendance of 1,000 people. At the end of the year, he held his first solo fan meeting Dear Melody in Manila, Philippines. In 2020, Lim appeared on
KBS's Open Concert, performing "Dear Love" and two songs with his father. On January 31, 2020, Lim released his first live album,
Rendez-vous (Live) that features a live version of 5 songs from his first solo concert Rendez-vous. In 2022, Lim became the host of Naver Now's Late Night Studio. On 13 Oct to 15 Oct 2023, Lim held three sold out concerts titled "Dive Into You" at Blue Square in Seoul. Guests included his father (Day 2), BtoB members (Day 3) and Prince Merman (all days). As part of the setlist, he performed 4 new songs which were to be included in his next solo album. In February 2024, BtoB announced the establishment of BtoB Company for the group activities and for Lim's solo activities. Lim released his second mini album,
The Young Man and the Deep Sea, on February 16, 2024, with the lead single "La Mar". An eponymous documentary film directed by Kwon Jinmo about the filming of the music video for "La Mar" in
Palau premiered as a competitive entry under the Korean Competition feature-length film category at the
20th Jecheon International Music & Film Festival. == Personal life ==